Due to changes in the refund policy you now need 2 hours of playtime before the normal STC drop time starts, most games will start dropping at 2.5 hours of playtime and every 30 minutes after (Devs can increase the 30 minute timer and there is an element of chance). Your games pretty much fall into either having well beyond the time needed to receive their cards(E.G. Cities Skyline with 12.9 hours) or not enough (lots of 1.6 hours). Likely it's a connection issue that a lot of other folks have reported, or we're working off different definition of "on all night"

Thanks for the answer and yeah you're right. After 2h of playtime (made by IdleMaster) it started to drop cards. Maybe I got any connection issue this night when I left pc turned on

I haven't had that happen with the initial 2 hrs when it idles several games at a time, but I have had it not work when it does one game at a time. IM will be running, but the time won't increase. Signing in and out seems to make it work again.

It runs one game at once after 2 hours. Because playing more than one game at same instance reduces the drop rate.