This release of Edge (for Windows) breaks the authentication in FYS-App. In order to fix it, you need to uninstall FYS-App using the Uninstaller on your Desktop and then install the latest rolling release from Download and Install FYS-App. Before you uninstall your current FYS-App, you may want to back up the config.json from folder fys-app, to another location. Copy the config file back to fys-app, after the installation. If you don’t do the backup, you will have Use Settings in fys-app, to reconfigure.
Starting with FYS-App v 13.5, Firefox will be a requirement. The new installer will meet this requirement. This means that if you are a new user, you will automatically get a good version of the of FYS-App.
The issue with Edge only impacts Windows users.