Problems with images
Using Jamroom
Its the caches. Try a manual reset of the cache:
Docs: "Manually clearing caches"
https://www.jamroom.net/the-jamroom-network/documentation/troubleshooting/114/somethings-wrong-what-do-i-do#manually-clearing-caches
Here is an image of yours that does not display:
https://nvandendries.nl/upimg/image/upimg_file/9/original/_v=82e3c1625662391
But if i change 1 number after that _v= it works. If i change ......91 to ......92 the image shows. That number is just a version file that just allows us to tell the browser that the file has been changed when it changes. The part that the server users to get the file is everything before that.