iPad: same device two UUID

Dani's input: This is something that has always happened, and I'm not sure what causes it. Each device has a unique identifier that is sent to Moodle to register the device. For some reason, sometimes this ID changes in the same device, so that device is registered more than once. I think that for people that only install the app from the store it shouldn't happen (or at least it shouldn't happen as often), but it's just a guess.

I just looked at the documentation of this ID in the plugin and for examples it says the following for iOS:

Returns the [UIDevice identifierForVendor] UUID which is unique and the same for all apps installed by the same vendor. However the UUID can be different if the user deletes all apps from the vendor and then reinstalls it.

So it seems that, in iOS, if you uninstall the app and install it again then the ID changes, which is a bit weird. But I'm not sure if there's a better alternative.