Sign in and choose an account
You sign in with the same Itefy user you use everywhere else. There is no separate mobile account.
With your email address
Enter your email address and password and tap Sign in. The eye icon beside the password shows what you have typed, which is worth using on a phone keyboard.
With Google
If your Itefy user is connected to a Google account, tap Continue with Google. You stay inside the app — there is no jump out to the browser and back.
Forgotten password
Tap Forgot password? and enter your email address. The link that arrives opens in your browser, where you set a new password; then come back to the app and sign in.
Choosing an account
If you belong to more than one Itefy account, you are asked which one to open. If you belong to exactly one, the app goes straight in.
To change later: More → Switch account.
If the list is empty
Signing in successfully and then being told there are no accounts means your account does not allow the mobile app. Mobile App is a per-user permission, and an administrator can switch it on for you under Settings → Users in the web app. The message on screen says which of the two situations you are in.