EDIT: It finally installed, you can delete/archive this now.
So I created a server for me and my sister to play together. I created the server before she installed the app.
She isn’t able to install the app and we have tried both the play store and various APK sites. They all gave her the error “App couldn’t be installed” or something.
We use the same phone (Samsung Galaxy J5 2017) and the same version of Android (7.0).
Could anyone give us any tips or a method to install it?
Any help would be appreciated, thanks.