Received less BATs than accumulated through last month

Last month I gathered approx. between 2.70 and 2.80 BATs. However, the claimed amount was just 2.00. Why the difference?

What Operating System and Brave version are you using ( Menu --> About Brave )?
I am using windows 10 and Brave 1.33.106

Is your browser wallet currently verified? (yes/no)
No

Have you been able to successfully receive payments in the past?
Yes

Are you using a VPN? (yes/no)
No

Are you in a supported region (see here for list of supported regions)?
Yes