The category doesn't spread at all in mobile version. How do I fix it?
Could you post a screenshot showing the problem? Which theme are you using?
Yes I have this issue as well after inherited an old template called Skeletal. Searching for 30,000 skis on a mobile is very painful
Skeletal is actually the base theme that all other Neto themes are created from. You probably just have a very old version. If you don't have any customizations, you could try reinstalling Skeletal to get the latest version which has had many improvements over the last couple of years.