Ok, so I decided after a frustrating transition and a beer I would give Fusion another shot.
So I deployed a new 2 core 4GB Ram, VPS on Vultr
I installed Centos 7, then Fusionpbx
I then set up my gateways, routes, ext's etc.
I then registered Cisco SPA 525 G2 to ext 1004 and another 525G2 to...