TAP IP, Google Calendar, and registration option for meetinsg

Okay, my Association got the TAP IP. 

When we set up a meeting, we put the link in our google calendar. The TAP IP has access to the calendar and recognizes the Zoom Link so someone can start the meeting with the tap.

We have a larger meeting coming up, and we are requesting that members register for the meeting, We put the registration link in the google calendar invite, but the TAP IP does not recognize the link. Therefore we can not figure out how to start the meeting from the TAP IP.

If there is any help in using the TAP IP with Zooming meetings that require registration,  it would be very much appreciated!