Bluehost team found a PHP incompatibility plugin. Disabled and the registrations are now working. Consider this closed.
The support post ‘An invalid response was returned from the server while attempting to process’ is closed to new replies.
Have a question about this support post? Create a new support post in our support forums and include a link to this existing support post so we can help you.
Support forum for Event Espresso 3 and Event Espresso 4.