Why isn’t the reduced withholding tax rate on royalties applied under the US-Russia treaty?

Hello everyone,
I have a question about the taxation of royalties from a US company (Epic Games). According to the US-Russia tax treaty, the withholding tax rate on royalties should be reduced from 30% to a lower rate (e.g., 10-15%). However, in my case, the full 30% withholding tax was applied.

Could this be because I didn’t submit the correct paperwork (like the W-8BEN form)? Or are there any other reasons why the reduced rate might not be applied?

I would appreciate any advice on how to get the reduced rate applied and avoid overpaying taxes.