Currently, Proton Pass only allows 2FA codes of 6 digits, all numbers. Proton Authenticator allows the same type of 2FA, but ALSO allows otherts, like Steam MFA type, which is 5 digits and can contain letters. This feature is to imnplement that same type in Proton Pass, at least put it as part of paid plans. I have proton unlimited but it's super frustrating and inconvenient having to use a different app just to login to other services, when I could have everything being autofilled in 1 app.