It's been going on for years.. I doubt Netgear will ever fix it. MacOS app hasn't been updated since 2019. I actually have an iMac that works somewhat reliably but has to be refreshed often. And I have to keep signing in as Admin to allow it through the firewall. All my other Macs cannot connect remotely. The windows version seems a bit more reliable and always connect for me, even on the same device as the Macs that can't connect (through parallels). My work around is sync with Dropbox.
Model: RN21200|ReadyNAS 212 Series 2- Bay (Diskless)
We have exactly the same problem with the Mac client. The support apparently does not know that the client does not work on Mac in general. Is there anyone who has got the client running on Mac with the current firmware?
Moving to a VPN such as ZeroTier or OpenVPN may be your best solution. Both @StephenB and I choose to go that way even though we are Windows users. He uses OpenVPN, and I use ZeroTier.
