Can't claim BAT rewards

I’m receiving ads and collecting BAT but when it comes to the date to claim them (6th of the month) the option doesn’t appear and my BAT balance stays at 0. It then resets my collection for the month and starts collecting from 0 again. This has happened for several months now and is only an issue on my desktop, mobile working fine.

How can I fix this?

**Brave Version( check About Brave ): 1.9.76