Here you will find instructions on how to set up the Token Authenticator App (TOTP) via the TOTP extension of the KeePassXC Password Manager for desktops or laptops.

Configuration

If you use KeepassXC as a password manager, you can set up a TOTP token for multi-factor authentication for new or existing entries.
The following instructions are for an existing entry in KeepassXC 2.78.
After you have created an "Authenticator App e.g. for Smartphone (TOTP)" token, you will be shown a QR code and a token secret.

Now switch to the KeepassXC program, select an existing entry and then right-click on TOTP - Set up TOTP.

Copy the token secret into the "Secret key" field and press "OK".

Then right-click on TOTP - Show TOTP and enter the security code displayed in the corresponding field and click on "Complete".

After this, the token ist set up successfully.

Detailed instructions can be found in the user documentation from the installed folders or under the following link:
https://keepassxc.org/docs/KeePassXC_UserGuide#_adding_totp_to_an_entry

In case of problems with the app, please contact the manufacturer directly for further support.