Complaint from European after purchase (5)
I believe the answer is:
gripe
This clue might be a double definition.
'complaint' is the first definition.
(an objection or source of annoyance)
'european after purchase' is the second definition.
'gripe' can be an answer for 'purchase' (thesaurus). I'm not sure about the 'european after' bit.
'from' acts as a link.
Can you help me to learn more?
(Other definitions for gripe that I've seen before include "Complain; colic (water)" , "Complain, grouse" , "carp" , "beef" , "Keep on complaining" .)