hey I have been encouraging many groups and people to use meet.coop with a lot of success as people are really eager to get a little autonomy from corporate privatized platforms.
Up to now my experience with small groups up to 5-10 people was fine with ca.meet.coop with a 9 GBP contribution, but at some point a meeting was more demanding and we had people joining around 25 unexpectedly, then different problems started, sound cutting, people not hearing, as we disabled videos I cannot say about those.
I only want to clarify if the issues were due to the number of people, and if there would be a way to accommodate such jumps.
The structure needing the instance is an activist structure. They do not need a large instance on a regular basis, however they would very occasionally need to bring a larger group of persons together.