strangely facebook not generating invoice or billing my account from past 4-5 days. my spend is over 100$/day.i never seen such thing happening before, have you experienced this? any reason for this?
Is this for a new account? Are you awaiting your first invoice/billing? If for an existing account, it's not abnormal to miss a few days in a row and then charge all at once. If your ads keep running, don't worry. Remember, they are much more concerned about the content/userbase than they are charging you $100 a day.
You're only running $100 a day - most I've seen is 3-4 days missed, and (for somebody else's account on this forum) 4 days missed and then being charged a few $K all at once. You only owe a few hundred so don't worry.
yes this is happening with all my accounts, they havent charged my CC from past 3 days...
Last time I heard of this, someone said it ended up being Free Traffic?
+1 add me to the list, haven't been charged in 3 days now on one of my accounts! Running clean/non-affiliate ads to warm up the account.
Luck you... I wish I wasn't being charged by Facebook
Same happened with my account but they charged my CC today, after 4 days.
yo. they finally charged. happy to see things working normally 
your account probably has 'billing threshold' right ?