I didnt use it for a while and now when i'm trying to spectate some games using nicks it says that player dont have any active game. I tried it with several nicks and same thing for every one of them.
Is it worked for u guys ?

Im wondering if it's not related with old client retirement.
Is it possible to spectate games using just nick ?

Probably need to use other sites, like op.gg or lolstarz