Sorry for the delay - Have updated the credentials. I also try reinstall both components
Here a test url to try
https://campsomerset.com.au/event.html?eventId=639&controller=event&task=individualRegister
We have found some event registration do work - guessing older ones that existed before the upgrade.
There are 2 messages
Warning
Error loading component: com_ja_payment, Component not found
Message
Invalid InvoiceDescription
I have check the invoice configuration and it was not setup so have configured it and retest with the same results
This url is one that works
https://campsomerset.com.au/kellys-test-events.html