Allow Teamviewer through the firewall?

Hello!

I've recently upgraded from UTM 9.4 to XG at home.

On setup I set the default firewall policy to "Accept any service going to "WAN" zone, when in "LAN" zone, and coming from any network".

This allows for a bit much in my opinion, so I disabled it. As soon as I did though, my Teamviewer hosts went offline.

I tried allowing for http and https but they still wont come up with a Partner ID.

As soon as i switch to "Any" on services, they all come up at the very second i enable the rule.

What am I missing?

My port forwards on remote desktop still works.

All articles I find is about blocking teamviewer. I need it open.

Also, the UTM 9.4 had a checklist of what services you wanted to be allowed in the FW by default when setting it up. 

I could not find anything similar on the XG, except for the #Default_Network_Policy[ ID : 1 ] (LAN-->WAN-->ANY rule) which I have now disabled.

Is that correct?

If so, I should not be able to browse the web now, as I have not opened up for http\s, but I can.

Is there a "hidden" set of rules that are always enabled\open ?

Thanks in advance.