I am trying to transfer some game gifts to my bot, but I keep getting the following error:

Trade Offer Rejected
Some items in your trade offer cannot be recognized by the system. Please make sure your backpack permission is public. Also Steam gift has its own permission setting.

I believe all my setting are correct, but I get this error with whatever i send.

Steam API lags. We cannot fetch your BP info so it is returning the "backpack is private" message.