This is tricky to troubleshoot at this point. Have you tried uninstalling and reinstalling Zeus yet?
Yes, tried it on two different phones too.
Have you changed the mailbox setting or left the default?
Default
Fascinating. Do you use a VPN on your mobile device or have any sort of specific networking config that could potentially be interfering w the connection?
I use a VPN but Zeus has worked for years with this setup. I just tried it with the VPN off anyway but still get error.
Not sure what else you can try. Perhaps worth looking into using Tailscale instead? nostr:note189ynm5xldgx465jrpdtfqhff077zesltctts7ssj8wf25l7zakzstgqwwf