Hi
I think the problem is using the VPN.
Check if your account is flagged. Follow the procedure as in the link Not getting ads since 12th February. Am I flagged?
IF A MODERATOR reads this, please write a notice to discourage the use of VPN, to the attention of Brave users and post it in the first welcoming page of this blog. This a very recurring problem and some users get punished for using VPN even when using VPN for work in their company!.
Who doesnt use VPN nowdays? I use VPN.
To solve the probleme for the time being I suggest to install tor browser , but it is very slow, or use opera which has a built-in vpn.