Conversations involving multiple participants, allowing collaboration and information sharing in Teams
This fixed also my problem, thanks you @Da Jinu Varghese!
I had to insist heavily on my IT provider as Microsoft was answering them that a new release of the app would fix it - but everytime a date for a new release was announced, it was not happening.
At the end I had to force them to switch my licence, then I has to delete all the data from the app on my device, reconnect and it was ok.
How weird it is that iPhone user are not affected, but just Android users? Microsoft support on this issue is clearly disappointing.