Existing images got corrupt, also new image uploads get corrupted

Hi there,

I hope that my problem will be solved. Basically what happened is that half of the images on my website (/www.onroses.nl) are not showing anymore. Also, all new image uploads get ‘corrupted’. I have searched these forums and other sites, but I haven’t found any solution.

All the images’ thumbnails are showing:
https://s17.postimg.org/at7g387dq/images.jpg

But the images themselves are not showing:
https://s8.postimg.org/hwe80605x/images_2.png

What I have tried:
-Uninstalling all plugins
-Update theme
-Use another theme
-Reinstall wordpress
-Cleared cache (with a plugin)
-Scan and repair database through myphpadmin

This all didn’t work. I thought it might be an issue with the hosting provider. So I moved my website to another hosting company, thinking that would fix my problem. To my surprise, the issue have not been solved. So, is there anyone who knows the solution? Thanks in advance!