[2020] I can't play Save the world after purchasing the Samurai bundle.

Bought the Samurai Scrapper pack today on Xbox store, using a brand new Xbox acount, linked to Epic account before purchasing.

However, when logging onto PC, I couldn't receive any content from the bundle, even the access to Save the world.

Currently I don't have an Xbox one. Epic & Microsoft support couldn't solve the problem.

I seriously need help right now. Thank you.