I installed this plugin back in April and it has worked perfectly for a long time. 20 people were successfully registered (the last recorded was on June 15th). Now, all of the sudden, it says "Failure - please retry!" after registering.
It still sends a confirmation email, but it does not give a registration ID and it does not get recorded on the back end.
There is also no longer an option to pay online.
This is horrible timing as it is for a client who has their huge annual event just a month away. They could lose thousands of dollars if this isn't resolved ASAP.
Here is the link: http://beartoothbeemers.org/