I use Trello in the free version with 4 users and one app (Chronos). After we have worked with it for some time, the app Chronos was been shut down, with the given reason that Altlassing has to earn money especially due to Corona. We are said to pay a usage fee to be able to use Chronos again. Alternatively, we should reset Chronos so that we can use it again for a while.
So a problem-free use is not possible for free.
Why is this not mentioned anywhere?