I've had a Google and look on here and can't find a solution that works for me. 

I've had a hub 2 and 3 tapo c200 cameras connected for a year. No problems, really simple to use and great for checking on the house when we're away. 

I've now upgraded to a hub 4 last week and cannot get them to work, can get them to connect locally but not to use when I'm outside of the home as they previously did. All the firmware etc is up to date too and I've tried factory resetting them all. 

I've tried buying a tapo tp link wireless extender to be able to change the dns address to 8.8.8.8 as the tapo cameras software suggests but it's not working.

I'm so frustrated with something which should work quite easily but causing me all sorts of issuea. Can anyone help with this please?