You will need to import the wallet address from the iOS app into a different wallet for signing off on changes such as website edits.
Go to the Unstoppable Domains iOS app.
Go to Back Up Domains in the menu.
Tap the Unstoppable Domains wallet.
This will reveal the recovery phrase (12 random words). These can be used to restore/import the wallet in most other supported wallet apps.
For ease of understanding, we recommend MetaMask extension for your computer’s browser. Open it, then click "Import using account seed phrase".
This will open a new tab in your browser where you will enter the 12 words phrase from the iOS app (spaces included) and create a password, then click Restore.
The iOS app wallet will now be successfully imported into MetaMask.