I noticed that I encounter this error when I am connecting via a VPN service, and do not encounter this error when I am not. If the reason is that Google rejects authenticating from suspicious IPs with the kind of authentication deja-dup and GNOME's online accounts use, I don't know if the team can do anything about it.
If this is indeed the case, I think a workaround by connecting from a non-blacklisted IP may work.
I noticed that I encounter this error when I am connecting via a VPN service, and do not encounter this error when I am not. If the reason is that Google rejects authenticating from suspicious IPs with the kind of authentication deja-dup and GNOME's online accounts use, I don't know if the team can do anything about it.
If this is indeed the case, I think a workaround by connecting from a non-blacklisted IP may work.