K14 Bumper Finisher

Hi guys
I have a Nissan Micra K14 N-Sport.
Only trouble is the accessory pack. It came with the car via approved dealer, no modifications by myself and all black like the car.
The two front bumper finishers are lifting off the bumper. Can I go to a body shop and get this sorted once and for all. Don’t really want to void my warranty either?!