I just bought this addon but encounter fatal error when tried the import function both for the simple and variance products with the following error:
Fatal error: Call to a member function get_template() on null in /home/mydomain/public_html/wp-content/plugins/wcmp-product_import_export_bundle/classes/class-wcmp-product-import-export-bundle-import.php on line 57
not sure if it’s related to the API keys – I did have some issue with validating but eventual it got validated.
I presume the issue you are facing is due to plugin confliction. It’s suggested to deactivate all other plugins apart from WooCommerce and WCMp. If the issue is fixed, activate each plugin one by one to track the fault one.