Authentication Required PopUp Window

I downloaded a Signal Client from the PureOS store called Flare. Whenever I go to open this app it pops up a small window “Authentication required”, The login keyring did not get unlocked when you logged into your computer. Password: “Blank textbox.” Cancel Button. Unlock Button.

Would there be any particular reason this would pop up? Probably not the place to ask this question, but since it was from the PureOS store from Flathub repository, I was wondering if there was a way to suppress this every time I click on the app. My only thought was that it was using a different Window system that is downloaded whenever a Flatpak is installed.

Likely, it wants to store the Signal credentials in the Gnome keyring. Which is a system-wide place to store passwords and other secrets, secured with one master-password. Your user password or the default “123456” should work there, unless you’ve set it up to something else.