Mobile: clicking on a category causes a search with random numbers

I’ve had an issue for a few days where if you access our shop through mobile and click on a specific category, it does not show any products there, instead causes a search with a bunch of random numbers.

On desktop the category works fine. What could be the issue?
Screenshot:
https://scontent-arn2-1.xx.fbcdn.net/v/t1.15752-9/325214050_5944382012249015_5123691876104938774_n.jpg?_nc_cat=101&ccb=1-7&_nc_sid=ae9488&_nc_ohc=_DpDb9srhKgAX9wS5Ag&_nc_ht=scontent-arn2-1.xx&oh=03_AdRIRauOyzfjVQw0i7-UssXGLrg99wmjoA9vYdpUN2VcYQ&oe=63E8F94F

The page I need help with: [log in to see the link]