I had no problems running 6 Sure Signals simultaneously on my Sky Fibre Pro connection. The biggest mistakes people make IMO are to use the supplied "catv" cables and not doing a factory reset. All the nonsense about opening ports is invalidated because I ran them simultaneously with no port forwarding possible or required.
Now replaced by wifi calling.
Edited by BatBoy (Fri 02-Sep-16 17:03:28)