Hello list, Due to buggy changes Apple has made to the Keychain on iOS 15, older versions of WireGuard on iOS will *eat your VPN configurations* when upgrading to iOS 15. This has been fixed by [1], which is now available as of version ≥1.0.15-26. If you are still on iOS 14, before updating to iOS 15, please remember to update the WireGuard app to this latest version in the App Store.
Sorry for the hassle. Jason [1] https://git.zx2c4.com/wireguard-apple/commit/?id=03a59ff38e96fb3bb5dde2f15fe42198d1dfb995
