On your iPhone or iPad, locate the MysteriumVPN app on your home screen.
Press and hold the app icon until a menu appears.
Tap Remove App (or the “–” icon on newer iOS versions).
Select Delete App and confirm to fully uninstall it.
After completing the steps above, restart your device, then download the latest version of MysteriumVPN from the App Store: https://apps.apple.com/us/app/mysterium-vpn-fast-secure/id6446624307