Video call functionality missing

We have a Glip only account (just the messenger and video call service, no number) and recently our video call functionality has disappeared altogether. The button to start a video call has disappeared from both our desktop apps and web applications.

I noticed certain members being added to the administration without their knowledge.

This issue has happened multiple times, and I found that removing those users from administration would fix the problem for a while, after a few days.

I've sent an email to techsupport@ringcentral.com two days ago and have yet to receive a response. I'm unable to submit a ticket as it requires a phone number that we don't have.