@Wayne-TP SORTED, thank you. Also went into my sky router and turned off 5G, added my bell and outside camera to the 2.4G, and then switched back on 5 g. The hub (which is 5G) then had no problem...

Brand new H500 security system in a box. When I try to connect th D235 doorbell, its not listed as an option. Doorbell just flashes red/green and cannot be seen. The hub also fails ot show the C460...