The customer support service is terrible.
Who actually controls the match results? Just because there’s a chat, players are forced to agree with each other — and if they don’t, the match is marked as invalid.
Also, the level system is completely unrealistic. You often end up playing against pairs who set their level to 2 or 1.5 but are actually much lower. That makes it impossible to have balanced matches, especially when you don’t know the other players.
Playtomic really needs to work on many of these issues. Premium? It only seems useful to avoid paying the commission, and even then, the overall service is still disappointing.