Brave Rewards gave me the claim, and I verified it. It gave me the claim, but it didn’t remove my pending rewards!
I’m sure this is not intentional; I’m just interested why this happened; and I do hope that this is not taken advantage of!
it happens to you from jeton 
It’s normal suddenly they Will dissapear
I believe they can’t do that, because then they will disappoint the users. Their only lead is “Earnings from ads,” and that is rounded to 0.5 BAT. Besides, this is a violation of privacy, so brave won’t remove them.
Payouts are currently in progress, so don’t be alarmed if you have not yet received your BAT from ads. Please see this thread for updates - May 2021 Brave Ads Payout Status - #3 by steeven. Please do not send a DM with your information until after payments have finished processing.