I’m here to share some information about error 404 when receiving payments.
We have similar reports from users like you that are unable to receive payment. This is a known issue, and our Product Team is aware of it and is currently looking for a permanent fix.
As a workaround, you have to follow this click path in order to record the payment successfully. Here’s how:
Go to Sales and choose Customers.
Select the customer from the list.
On the Transaction List tab, click and open the invoice needing to receive the payment.
Click Receive Payment.
In the meantime, I suggest giving our Customer Care Team a call to add your account to the list of affected users. Please have our representative link your case number to INV-14833.
An email will be sent to you with any new information to assure you're up to date with the progress of the investigation. Rest assured, I will also keep you posted here in this thread for any updates available.