Fedora flatpak remote is not GPG verified

Hi, I recently started using Fedora flatpak remote in Fedora 30 Silverblue, but now I'm facing issue with GPG verification. I didn't had any issue when installing the application from the remote few days ago, but when I'm trying to do `flatpak update` I'm getting "Error: Can't pull from untrusted non-gpg verified remote" Why the flatpak remote is not GPG signed? Or is there another issue? Regards, mkonecny P.S.: I sent the same message to Fedora devel mailing list, but because there is no response I'm sending it also to Fedora desktop mailing list.