Bog standard Clios have various material patterns, split seats and headrests. The Clio dynamique does share the same material with the front seats being the same as a 182 cup but the rears are split 60/40 with headrests.
Good luck finding an original rear seat.
The standard rear seats are getting more and more difficult to get hold of!
They are NOT the same as the bog standard Clio and only shared by the 182 cup which again is getting rarer but you may find somebody breaking one or stripping for track.
The split...
It’s the diagnostic system that reads the ecu for errors and tells you in seconds what’s logged.
Beware though, you can buy aftermarket so called clip systems on the internet that are not worth the money it’s printed on.
Find a local specialist that has genuine Renault CLIP diagnostic software.
Sounds like you need to take it to a different garage with clip before you waste any more money!
Where are you?
Renault Clip will pinpoint the error in seconds.