diff --git a/app/Helpers/Invoice/ProRata.php b/app/Helpers/Invoice/ProRata.php
index c96166c64df4..cae0b696d083 100644
--- a/app/Helpers/Invoice/ProRata.php
+++ b/app/Helpers/Invoice/ProRata.php
@@ -23,12 +23,12 @@ class ProRata
      * the time interval and the frequency duration
      *
      * @param float $amount
-     * @param Carbon $from_date
-     * @param Carbon $to_date
+     * @param \Illuminate\Support\Carbon | \Carbon\Carbon $from_date
+     * @param \Illuminate\Support\Carbon | \Carbon\Carbon $to_date
      * @param int $frequency
      * @return float
      */
-    public function refund(float $amount, Carbon $from_date, Carbon $to_date, int $frequency): float
+    public function refund(float $amount, $from_date, $to_date, int $frequency): float
     {
         $days = intval(abs($from_date->copy()->diffInDays($to_date)));
         $days_in_frequency = $this->getDaysInFrequency($frequency);
@@ -41,12 +41,12 @@ class ProRata
      * the time interval and the frequency duration
      *
      * @param float $amount
-     * @param Carbon $from_date
-     * @param Carbon $to_date
+     * @param \Illuminate\Support\Carbon | \Carbon\Carbon  $from_date
+     * @param \Illuminate\Support\Carbon | \Carbon\Carbon  $to_date
      * @param int $frequency
      * @return float
      */
-    public function charge(float $amount, Carbon $from_date, Carbon $to_date, int $frequency): float
+    public function charge(float $amount, $from_date, $to_date, int $frequency): float
     {
         $days = intval(abs($from_date->copy()->diffInDays($to_date)));
         $days_in_frequency = $this->getDaysInFrequency($frequency);
diff --git a/app/Livewire/Flow2/InvoicePay.php b/app/Livewire/Flow2/InvoicePay.php
index f67278d32b9c..2c2aecc86e28 100644
--- a/app/Livewire/Flow2/InvoicePay.php
+++ b/app/Livewire/Flow2/InvoicePay.php
@@ -165,6 +165,7 @@ class InvoicePay extends Component
             return $this->required_fields = true;
         }
 
+        /** @var \App\Models\ClientContact $contact */
         $contact = $this->getContext()['contact'];
 
         foreach ($fields as $index => $field) {
@@ -173,7 +174,7 @@ class InvoicePay extends Component
             if (\Illuminate\Support\Str::startsWith($field['name'], 'client_')) {
                 if (
                     empty($contact->client->{$_field})
-                    || is_null($contact->client->{$_field})
+                    || is_null($contact->client->{$_field}) //@phpstan-ignore-line
                 ) {
 
                     return $this->required_fields = true;
@@ -182,7 +183,7 @@ class InvoicePay extends Component
             }
 
             if (\Illuminate\Support\Str::startsWith($field['name'], 'contact_')) {
-                if (empty($contact->{$_field}) || is_null($contact->{$_field}) || str_contains($contact->{$_field}, '@example.com')) {
+                if (empty($contact->{$_field}) || is_null($contact->{$_field}) || str_contains($contact->{$_field}, '@example.com')) { //@phpstan-ignore-line
                     return $this->required_fields = true;
                 }
             }
diff --git a/app/Repositories/BaseRepository.php b/app/Repositories/BaseRepository.php
index 3e4ff6b4e557..5d6d9a15d56c 100644
--- a/app/Repositories/BaseRepository.php
+++ b/app/Repositories/BaseRepository.php
@@ -147,8 +147,7 @@ class BaseRepository
      * @throws \ReflectionException
      */
     protected function alternativeSave($data, $model)
-    {   //$start = microtime(true);
-        //forces the client_id if it doesn't exist
+    {   
         if (array_key_exists('client_id', $data)) {
             $model->client_id = $data['client_id'];
         }
@@ -167,7 +166,7 @@ class BaseRepository
             $company_defaults = $client->setCompanyDefaults($data, lcfirst($resource));
             $data['exchange_rate'] = $company_defaults['exchange_rate'];
             $model->uses_inclusive_taxes = $client->getSetting('inclusive_taxes');
-            // $data = array_merge($company_defaults, $data);
+
             $data = array_merge($data, $company_defaults);
         }
 
diff --git a/app/Services/Client/RFFService.php b/app/Services/Client/RFFService.php
index a3983d7c9593..08b4b3b467a0 100644
--- a/app/Services/Client/RFFService.php
+++ b/app/Services/Client/RFFService.php
@@ -69,7 +69,7 @@ class RFFService
             if (Str::startsWith($field['name'], 'client_')) {
                 if (
                     empty($_contact->client->{$_field})
-                    || is_null($_contact->client->{$_field})
+                    || is_null($_contact->client->{$_field}) //@phpstan-ignore-line
                 ) {
                     // $this->show_form = true;
                     $this->unfilled_fields++;
@@ -79,7 +79,7 @@ class RFFService
             }
 
             if (Str::startsWith($field['name'], 'contact_')) {
-                if (empty($_contact->{$_field}) || is_null($_contact->{$_field}) || str_contains($_contact->{$_field}, '@example.com')) {
+                if (empty($_contact->{$_field}) || is_null($_contact->{$_field}) || str_contains($_contact->{$_field}, '@example.com')) { //@phpstan-ignore-line
                     $this->unfilled_fields++;
                 } else {
                     $this->fields[$index]['filled'] = true;
diff --git a/app/Services/EDocument/Standards/OrderXDocument.php b/app/Services/EDocument/Standards/OrderXDocument.php
index de3af56868d5..32200b9a3dc8 100644
--- a/app/Services/EDocument/Standards/OrderXDocument.php
+++ b/app/Services/EDocument/Standards/OrderXDocument.php
@@ -100,7 +100,7 @@ class OrderXDocument extends AbstractService
             $this->orderxdocument->setDocumentShipToAddress($settings_entity->shipping_address1, $settings_entity->shipping_address2, "", $settings_entity->shipping_postal_code, $settings_entity->shipping_city, $settings_entity->shipping_country->iso_3166_2, $settings_entity->shipping_state);
         }
 
-        $this->orderxdocument->addDocumentPaymentMean(68, ctrans("texts.xinvoice_online_payment"));
+        $this->orderxdocument->addDocumentPaymentMean('68', ctrans("texts.xinvoice_online_payment"));
 
         if (str_contains($company->getSetting('vat_number'), "/")) {
             $this->orderxdocument->addDocumentSellerTaxRegistration("FC", $company->getSetting('vat_number'));
diff --git a/app/Services/EDocument/Standards/ZugferdEDokument.php b/app/Services/EDocument/Standards/ZugferdEDokument.php
index 4e261fd1b7a9..74555942c393 100644
--- a/app/Services/EDocument/Standards/ZugferdEDokument.php
+++ b/app/Services/EDocument/Standards/ZugferdEDokument.php
@@ -124,9 +124,9 @@ class ZugferdEDokument extends AbstractService
 
         //Payment Means - Switcher
         if($company->settings->custom_value1 == '42') {
-            $this->xdocument->addDocumentPaymentMean(typecode: 42, payeeIban: $company->settings->custom_value2, payeeAccountName: $company->settings->custom_value4, payeeBic: $company->settings->custom_value3);
+            $this->xdocument->addDocumentPaymentMean(typecode: '42', payeeIban: $company->settings->custom_value2, payeeAccountName: $company->settings->custom_value4, payeeBic: $company->settings->custom_value3);
         } else {
-            $this->xdocument->addDocumentPaymentMean(68, ctrans("texts.xinvoice_online_payment"));
+            $this->xdocument->addDocumentPaymentMean('68', ctrans("texts.xinvoice_online_payment"));
         }
 
         if (str_contains($company->getSetting('vat_number'), "/")) {
diff --git a/app/Services/Quickbooks/Jobs/QuickbooksSync.php b/app/Services/Quickbooks/Jobs/QuickbooksSync.php
index 86057a06bd22..0b82e5a3578a 100644
--- a/app/Services/Quickbooks/Jobs/QuickbooksSync.php
+++ b/app/Services/Quickbooks/Jobs/QuickbooksSync.php
@@ -102,9 +102,9 @@ class QuickbooksSync implements ShouldQueue
     private function processEntitySync(string $entity, $records)
     {
         match($entity){
-            // 'client' => $this->syncQbToNinjaClients($records),
+            'client' => $this->syncQbToNinjaClients($records),
             'product' => $this->syncQbToNinjaProducts($records),
-            // 'invoice' => $this->syncQbToNinjaInvoices($records),
+            'invoice' => $this->syncQbToNinjaInvoices($records),
             // 'vendor' => $this->syncQbToNinjaClients($records),
             // 'quote' => $this->syncInvoices($records),
             // 'purchase_order' => $this->syncInvoices($records),