Meeting Disappearing

I have an automation (Pabbly) that's been working for almost 2 weeks now that involves adding participants to two recurring meetings.

For some reason, over this past weekend, one of the meetings changed to a recurring meeting with no set time or date. It also deleted everyone who had subscribed up to that point. The only reason I found out is due to the automation, which errored when trying to add some people to the event.

I recreated the meeting, re-ran each of the automations (which added those two people to the meeting -- but keep in mind that over 30 registrations disappeared when the meeting changed like this.)

I go in an hour or so later, and notice that that meeting has totally disappeared.

Any ideas? Very very strange..