It's probably because of the Steam servers. I don't see any other problem. Thanks for fast response MrL0G1C.

I don't know what's the problem, I tried every single solution, every version and still nothing works. For example, it idles game "Walking Dead", it's just cycling 15:00mins and nothing happens. Eventually, after like 8 hours I would get 2 cards. I waited 2 days, and got 6 cards in total, (out of 107 available). I remember using Idle Master before, and after one night I'd get all of the cards. If anyone knows the solution, please write below. Thanks in advance!

UPDATE: Restarted my router, got 6 cards in 10 minutes! Thanks MrL0G1C! :)

Hey, I recently started using Idle Master and I don't know if this is normal or it's happening only to me. I have around 200 games, and I left Idler overnight in fast mode. When I woke up, I saw only 8 cards in inventory.. My question is, should it be like this? Thanks in advance!