As I recall, before I changed my routing for the BBS, it would allow me to browse without logging in, but would not permit login over the VPN. I thought that, sure, maybe block new user registrations, but blocking an existing user from logging in? Peculiar.

EDIT: At the moment, I am posting this from a VPN connection, so whatever/wherever the restriction lies (if still there), it was probably IP-based. My VPN provider has thousands of exit points, and regularly rotates IP addresses, so.. difficult to conclude anything about it.

For now I'll run without the special routing, and post more information next time I get blocked, if ever.

Cheers