http://psteamcommunity.yuanyoumao.com/tradingcards/faq

You need to buy the rest or trade for them:
http://psteamcommunity.yuanyoumao.com/market/

"So what's is the best way to get games to idle"
I don't think it makes any difference at all, each game has it's set amoutn of time per card. If you've had the games a long time then pause/unpause or skip to next game to get some of the cards to drop fast (after a few seconds). Skip to next game will require you to restart steam idle at some point to finish farming though.

引用自 nightside187：

i got 100+ cards for about 130 ish games , and yes most of those games have been in my library for a long time.

So, just the 1st card of each set drops quick? Or more? I find it's usually just the 1st card in the games badge set that quick drops.

Either your internet service provider or software on your computer is blocking you. Try to reset your internet connection, or use a proxy or vpn.

See faq

See Pinned Faq, it's not faster, some people have a two hour restriction - people who have refunded steam items. They don't get cards for the 1st two hours of playing a game. So idle master can idle all games at once for two hours, then idle them individually. Idling all games at once takes proportionally longer.

Change settings if you want to.

Normal, safe, working fine.

FAQ:
https://support.steampowered.com/kb_article.php?ref=3330-IAGK-7663

Account is restricted so won't drop cards, you need to put $5 or more into the account to unrestrict it, you can use that money to buy gift for primary account - is what I do.

Idle master reads your badge page, linked here, it looks for 'card drops remaining'
http://psteamcommunity.yuanyoumao.com/my/badges

Steam gives the cards(not idle master), it only ever gives half set number of cards.
See the faq ^

You need to buy the rest or trade for them:
http://psteamcommunity.yuanyoumao.com/market/