Participants getting disconnected from

We were having a meeting with 16-18 people today (19/07/2020 @ 17:00 IST) on
However, it was impossible as every time a 5th person (7th with cameras turned off) joined, one of the members got disconnected. This is really perplexing as a year or so back I’ve participated in meets with many more people.
Could someone please help me understand what’s happening & if possible, solve the issue? I mean the bottlenecking issue in JitSi is said to happen with 35 people or so, as much as I know.
Thank you.