Hello,
I have checked your website, and the category links are working correctly. The category pages are opening as expected and are not redirecting to the homepage.
Could you please clear your browser and website cache, then test again? We also recommend checking the site in an Incognito/Private browsing window.
If the issue still persists, please let us know which specific category links are affected so i wil further check and give you a possible solution.
Best Regards