Transferring the app is no problem, since your app account is stored in the e-mail account you used for purchase.
Important: you must use the same login data in the app on the new device.
You can check which app accounts are stored on which e-mail address here.
If your app does not work, please restore your app account.
If you still experience problems with your app, please contact our support team here.
We'll get back to you shortly. 😊