Komunitné fórum Firefox

Hello, I am having a problem with Mozilla Firefox on Windows 10.

Firefox sometimes keeps loading continuously and some websites do not open properly or take a very long time to load. My internet connection is working normally, and the same websites may work better in another browser.

I have tried closing and reopening Firefox, restarting my computer, and refreshing the website, but the problem still happens.

Please help me check what may be causing this problem and how I can repair or reset Firefox without losing my bookmarks, passwords, and important data.

Thank you.