The browser won’t allow me to use the rewards system due to “me being in a region, where it is not available”

The official page states that Brave rewards is not available in these jurisdictions:
I am in none of those, yet I can’t use the Rewards
My guess would be that because of my close proximity to Russia, one of the jurisdictions in which Brave Rewards is not available, I cannot use the feature
I was never asked about my region, and the search engine was set to the russian “Yandex” at the very beginning of my use of the browser
I would like to fix that, but can’t find any information on how to do that.
