Webhook error in 4.20

[RomanovM]

we have installed the Payrexx plugin on our nopCommerce version 4.20 and after the recent Webhook update (12.10) that has been released yesterday, the integration with our ERP is no longer working.

Unfortunately, the log we can download from Payrexx admin panel does not give us much information (only Error HTTP400 --> see screenshot under the following link: https://prnt.sc/1vzjjdx ).

We have already contacted Payrexx but they say the issue from the plugin and not their side (in fact, payments are working - just the integration to our EPR is blocked).

Source: https://www.nopcommerce.com/boards/topic/92192/integration-issue-with-payrexx-payment-plugin

Perhaps there is no such problem in the updated versions, we just need to check it.