First of all you are doing a great job here! thanks in advance.
As a team we have submitted our app to market and had a lots of confusions with review process.
We are running on Firebase for our media files as CDN.
Zoom does not allow domains like firebasestorage.googleapis.com . which is problem for platforms whom using CDN.
We had to remove them and media files will not appear on quiz screen due to this problem.
Second problem is all reviews are taking too much time and we have to resubmit app for single changes and wait for a week.
I understand that everyone wants to have their app on market but there should be some way to review and contact instantly which will reduce the workload for each teams.
To sum up;
We have submitted our app and waiting for security review but we do not know how much week will take and our big problem is Zoom is not allowing us to provide known CDN domains (firebasestorage.googleapis.com).