Talk talk powerline adaptors not working on Plusnet

[#1]

Changed ISP from talk talk to PlusNet yesterday, set up router and all seemed well, apart from youview tv in backroom not working. Was using 2 talk talk powerline adapters which worked yesterday on talk talk but will not pair now with plusnet. Can anyone tell me if these talk talk adapters are not compatible with plusnet, or any suggestions I might try,  Thanks

[#2]

They are probably configured for a different IP address range.  Your best bet would be to reset them to their out-of-box state and start again with whatever configuration process you are supposed to perform.  TalkTalk don't make Powerline adaptors so it might help to find out who the real manufacturer is.      

[#3]

Try plugging both adapters into the same 2+ way extension socket to see if they will pair up.  Make sure they are plugged into wall sockets when you come to actually use them.