Right side of touchscreen doesn't work… at all!

"Hi, sorry, I couldn’t introduce myself on the right page.
On Friday, January 10th, my FP1 (first batch) suddenly had a problem : the middle part of my screen is not reacting anymore. I found the following thread and did as requested ( ✏ How to test your touchscreen for abberant behaviour (is it a hardware or software failure?) ) I took a photo but it seems I can’t upload it here…
I can no longer use my fairphone as the middle screen is where most of the useful touches are (including the numbers to enter the pin).

I sent 2 mails and added the photo to support and i still haven’t heard from them… Anybody can help? Is my fairphone already dead ? I bought it only 2 years and a half ago… I am so disappointed.
Thank you in advance.