Have you checked if you have multiple Ledger devices? Sometimes, this issue arises when there's confusion between devices. Try logging out and back in with the Ledger. If it still doesn't work, there might be a temporary issue. If you're still facing difficulties, you could try using a different wallet. You don't have to transfer funds; simply import the same Ledger on another platform like Suiet to access your wallet.

Ensure your Ledger device firmware and software on your computer are up to date. Sometimes, this error comes from outdated software versions.