Profile registration creates error after submit

I have purchased the unlimited plan Friday, however the subscription has not been updated yet - likely next week. Hopefully we can work on this issue together this weekend.

I have recently created 4 new profiles using "save as copy" method.
3 of 4 profiles work fine - no errors. 1 profile (a copy of the original profile) generates the error shown in the screen capture: "No valid registration page found for this profile" and the most frequent error message is "Sorry we are unable to locate your active registration session. Please try again."

In both cases instead of redirecting the registrant to the EasySocial community page, the system redirects the user back to the "select a profile" page. In both cases all data is saved in the user profile and the user receives all system messages. The user record in EasySocial>Users shows the user as active and enabled.

Recreate the error:
1. Navigate to the registration page
2. Select the Assessment Course profile (this profile generates the error).
3. Complete all required fields on all pages of the registration/application.
4. Upon selecting submit on the last page of the registration/application you will be redirected to the select a profile page - shown in the screen capture.

Since this profile is an exact copy with only the profile name changed and one (1) text edit on the Assessment Project page...this is a perplexing error when all other profiles work without error.

I have tried this on two different computers and different browsers to rule out a browser and cache issue.

I have also flushed my SiteGround Supercache with no improvement.

See site details for access information and additional details.

Todd