Show Exterlan Login UI crashes the Game

So I’ve just started to try and implement in-app purchases. The documentation is not reliable, the latest information on the forums I find is not accurate or helpful and by using the “Show External Login UI” my app now crashes.

I got the following blueprint:

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When I test it on the computer it just shows a box that says “Failure” that I made.
When I test it on the android phone however, it crashes the app immediately.

I need some help with how this flow works and how I’m even supposed to use the very few nodes available for in-app purchases in the first place.

It’s crucial that this works for my game otherwise I have no business model :V

Still need help with this

Not a single one of these work:

24cc90d8dce8efd3ce10814453bb33231f3e221a.png

Still nothing? Most of these either returns Failure path or Crashes my game!