Yeah, Larian already said in twitter that they are not supported by them.
"Be wary of preordering BG3 anywhere right now. We won't have a pre-order period. We have no plans to work with retail yet, and no 3rd party distributors. Haven't announced a price or date. We can't guarantee you'll get anything from them"
https://twitter.com/Cromwelp/status/1289649549980708865
