Help streaming providers

[DCROSSi]

I need some help….

So I’ve got a split IP addresses on LAN some which stay on ISP and other goes to VPN.

When my devices are on ISP I can’t get them to load/connect to Such as BBC/Netflix.
But everything else is working fine.
But if I send them devices through my VPN they work fine?

Not sure what’s going on but it P me off .