I have added Fossdroid in the repositories list, it is “unsigned”
then a qcode showing up but, I don’t understand what is it intended for. (Ok.I scanned it with another phone,that is weird, I have fdroid installed on it as well, but even there, after have even visited the fossdroid and installed even few apks, it is still in unsigned status) .
Repos have a specific format, I don’t think Fossdroid has a repo. Last I looked, its just a website that shows what is in some other F-Droid repos there. The “unsigned” warning probably means that F-Droid didn’t find the necessary files that make it a F-Droid repo.