WP-invoice has stopped processing payments, or as far as I can tell, sending any information to Authorize.net.
When you fill out payment info on an invoice and hit submit, the invoice page just refreshes.
There is no error message, no record of payment and no sign of attempted payment on Authorize.net.
I have double checked that all of my transaction ID and transaction key are correct with Authorize.net.
I was able to successfully run a payment 15 days ago, and have not changed payment settings at all (until troubleshooting today). I have tried just about every option available through WP-Invoice and have not made any progress.
Your help is hugely appreciated, we have invoices out now that clients are unable to pay :(
Let me know if you require any other information.