I can select the Mobile payment option, but nothing happens. E.g. In google playstore it works.
Didn't Fortnite fly off the Play Store? Maybe it's because…
Yes, but it should still work in fortnite, I can also play in others
I would also say it doesn't work. If the whole thing has been resolved, then also determines the payment method.
The reason you can't pay is because Fortnite has been removed from the GooglePlayStore and AppStore. In both cases, the in-game payment was processed by the services of those named. Due to the expulsion for breach of contract, Google and Apple have also blocked the InApp transactions. Epic is forced to patch its game somehow outside of the stores in order to be able to add a new payment method. After all, it can no longer be distributed or updated via the stores.
Yes but when it was in the playstore I couldn't buy it
The last version that was available in the App Store still had the native payment method. Since you can no longer update the app in the classic way, it is also not possible to use a new payment method.
Edit:
Oops, I actually wanted to reply to a comment.