Can't access my.channelsdvr.net over VPN

I often use a VPN when not at home. When I try and access
http://my.channelsdvr.net/
I get this error
{"error":"unauthorized access from #.#.#.#"}

This only happens on my desktop/laptop.
I've tried with firefox and chrome.

No issue same VPN provider on my android phone.

Thanks

Update your DVR to the latest version