Tuya Local BT Mesh & lights

Hi,
Tuya has my BT Mesh (SIG) Gateway which has its own ID and Local Key, It also has my 4 lights each has an ID but no Local Key “” The Tuya Integration cleverly puts them together.
Tuya Local asks for the Gateway’s ID, Local Key and IP address and the sub ID of the light.
I’ve tried this numerous times with all 4 lights but Tuya Local refuses to connect them.
Is this possible or not please?
TIA
John

Anyone please?