@Nekrot1k What is your question? If you are using Release version of Brave, you should still be able to participate in Rewards. However, as you stated, Ukraine is not supported at this time by Uphold and others. This notice went out a while ago, which you can see at Important: Uphold no longer supporting countries in Russia, Ukraine, Belarus, and Balkans region
You also would see Ukraine is not on the list of supported countries at https://support.brave.com/hc/en-us/articles/6539887971469
When you are saying you can’t get Rewards, which are you referencing? Also, can you say which version of Brave you’re using?