Is it the bright spot issue? That problem happens quite often.
There is no do-it-yourself solution. The screen needs to be replaced in this case. (Expect to not have a screen for some days. Because the replacement will not be sent until they have the old screen. But you don’t have to send in your whole phone.)
Things you can do in the meantime before the support answers:
- Check your address in the Fairphone shop.
- Take a photo of the screen defects.
- Copy your important data (which you might need in the meantime while your screen is away) to another place.
- Get a box, bubble wrap for the screen and make your printer (for return label) ready.
Do not send the screen on your own. Your package will be picked up after support approved your return request (you can select date/time of pickup).
The support probably will give you a link to the return portal where you have to enter your problem one more time into a form.