Just bought an item but after the transaction I can't access its features

I just purchased my first item in the market place (5e player's handbook) but after the purchase I can't seem to access neither the book nor the content that comes with it. The money is no longer in my account and when I retry the purchase from my mobile app it states "already owned". Can I receive some support for this?

What happens if you select any option from the Contents Page

 I can see the content list but if I try to access something it redirects me to the buy out page. On the app if I do that it stays stuck in loading as soon as I select one of the items in the list of contents.

If you go here do you see a "Sync Entitlements" button?

Does the book show up here?

No, it states that "Your entitlements data is in sync!".

And also no, I can't see the book showing up in my order history.

Does it make sense to buy the book through the browser application? Is this behavior common or is this an unknown issue?