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Login to your Jira account via the web browser. If you are doing this for the first time, you will be prompted to connect your Jira account to an authenticator (e.g., Google Authenticator). Follow the 2FA instructions.
In the Mobility for Jira app, create a new account by pressing Add Account. If you already have an existing account for your Jira Server, remove it by left swiping. Enter your URL and then press the Login with 🌐 button.
The Jira Login screen will appear. You can select “Mobile View” to fit the screen better. Enter Select the Mobile View option and enter your credentials and press Login.
The 2FA prompt screen will appear, switch to your authenticator and copy/memorize the PIN
Enter the authenticator PIN in the Mobility app 2FA prompt screen and press Login.
You should be logged into Jira