Error receiving data: Connection reset by peer

For some reason, I have been unable to use Flathub for six months already - when I try to add a repository or download an application, I get the error “Unable to load summary from remote flathub: Peer failed to perform TLS handshake: Error receiving data: Connection reset by peer”. It does not work with either cable or mobile internet. What can be wrong? Shows up on all distributions I’ve tried, now I use OpenSUSE Tumbleweed. It only started working again when I flew from my home (Kamchatka, Elizovo) to Moscow - could this be the case?
Sorry for my poor language