Install Element X from your app store, then follow along.
Open the app. Tap Sign In.
Element defaults to matrix.org — you need to change this. Tap Change Account Provider.
Tap Other.
Type enacted.org, tap it when it appears, then tap Continue.
Enter your username and password. Tap Continue, then tap Continue again to authorize Element.
You'll be asked to confirm your identity. Pick one:
Your session is verified. You now have access to your encrypted message history.
Your session is verified and your encrypted messages are restored.
If you've lost your recovery key and have no other verified sessions, old encrypted messages cannot be recovered. You can still use your account going forward.