I think Valve has mucked up something / server issue.

I haven't used IM for months, I see some games only have one or two items on the points shop now now, I don't see any kind of pattern to it. Like Dr Who Infinity, I bought that and played it until I got all drops, on the points store there is only 1 emoticon, oddly it's a rare one.

And some games seem to have pulled all items. I'd like to hear why.

Search for previous answer to that question. The answer is not yes or no.

Up to 3 hours or more for the 1st drop, but if you're using 'fast mode' then you should start to get drops for several games after that 3 hours so long as you have several games that will drop cards.

Don't run I.M. from the zip file
Delete the program's appdata
see:
https://psteamcommunity.yuanyoumao.com/groups/idlemastery/discussions/0/133257636766989675/

Only an account that buys a game will get card drops for that game. Idle Master does not drop cards, steam drops cards. See your badge page, looks for the words 'card drops remaining'.

You played the game for hundreds of hours, steam drops all the cards in the first few hours.

You've had all card drops already, steam gives you half a badge set per game, that's it.

IDK why but Valve like to break the login page from time to time, it was broken for me also when I tried it a few days ago. I left a message on github.

Turn it all off and on again.