photo problem, gray strip

I have a huge problem with the photos uploading since, like a week, each photo I've been trying to upload seems to be broken. All of them look like they were partly uploaded. I can see the gray strip on the photos or even all photo is gray. I tried to resize them before uploading (to have photos like 4-5MB), changed the php protocol on my server, but everything failed ... :slight_frown:

I am looking forward to hearing from you

Kind regards