One of our Members just made me aware of this issue withe the Wild Apricot Mobile App for Members.  It will not allow you to register for an event that is full, which would put you on the waitlist.  This often happens with our popular events that are typically overbooked, and we want Members to join the waitlist in this case.

This issue has been reported to Wild Apricot.

The workaround is to use the full club web site, from a computer or mobile device web browser (Safari, Chrome, ...) in order to register for events, rather than the mobile app.  Go to the Event calendar, find your event and begin the registration process.  If the event is full, you will be presented with an option to join the waitlist.