Hi @communityanswers and @ashlandartcenter,
Thanks both for reaching out to us on this!
When ‘Custom Recurrence’ was introduced a couple of releases ago, the field for recurrence description was replaced by the automated message you are pointing out. This resulted inconvenient for some of our users so we decide it was a good idea to bring this field back. This ‘fix’ will be included in the upcoming release of Events Calendar PRO which will be released next month.
Do you think you can wait until this is added back in next release? The other option is to downgrade the plugins to a previous version where this was still working.
Please let me know if this answers your question,
Best,
Nico