Hi Matt!
Thanks for reaching out to us!
I’m not really familiar with the AMP for WP plugin, but let me help you with the troubleshooting to see if we can find the source of the problem.
First, could you please share with us your system information by following this guide > https://theeventscalendar.com/knowledgebase/sharing-sys-info/ ? We’ll see if there is anything strange that would indicate an error from there.
Also, please enable WP_DEBUG and WP_DEBUG_LOG. This will create a debug.log file inside the /wp-content directory.
After that, try reproducing the issue a few times, so that in case there is an error, it will be saved into the debug.log file. Please share that log file with us so we can see if any problem from there.
Let me know about that.
Thanks,
Victor