Addons not connecting to the internet

Hi,

Hopefully this has come up before, but today suddenly none of my addons can access the internet. Yesterday, I watched a doc on Youtube, and then today absolutely nothing will connect to anything, including to repositories to try to download maintenance addons.

I saw something about DSL boxes blocking things that begin with ad, but I couldn’t find anything in the parameters of my box. I am running Jarvis on Kodibuntu, and my wifi remote and samba are still working fine, so it sounds like this might be likely it. But again, couldn’t find any such settings in my boxes preferences.

Any ideas? Many thanks in advance!