Hi. For the August payout, you need to update your system to the latest version (1.42.88). There was a payout issue which has since been fixed. See the notice linked below.
Payouts are still processing. After updating, you should wait for payouts to finish processing to see if you receive claim buttons . You can check payout status at Brave Ads Payout status or at Regional Catalog Viewer . If you do not receive your payout for August (or previous months), then submit a request for support to investigate all the months with payout issues using the form linked below.