500px broken on profile pages

[mleyen]

500px images are not expanding on an user's profile page.

It seems to work fine on the home page, but when browsing through a user's pictures, expandos don't work and just show the exclamation mark icon.

Pressing T opens a tab with "Error 403 No go". The URL is revealed to be someting like this:
https://drscdn.500px.org/photo/135357765/q%3D80_m%3D2000/v2?webp=true&sig=41010e0065d23924d85b5d4667787dd6ec4dd52a70663fe37cd02bd7a0359e18

Removing the "amp;" shows the correct image.

Test page: https://500px.com/tim_santasombat (or just any other 500px profile, I just picked the first one on the front page)

[digideth]

It doesn't work any where on 500px any more even through rss ( https://500px.com/popular.rss) you get the exclamation triangle.