Hi, I've just purchased and installed my new mesh system. I had an existing virgin media hub 3.0, which I put into modem mode and all seems to be working for basic WiFi connectivity. 

I had a few devices connected by ethernet which connected directly to the virgin box by ethernet. Namely my LG TV and my hive home hub. 

Since installing the mesh system, none of the devices connected directly to the virgin box are working. 

Any advice very welcome. Im not very tech minded with networking jargon, so baby steps in simple terms if possible! 

Thanks in advance for any help.