Make sure you are not blocking content.

Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop

Many site issues can be caused by corrupt cookies or cache.

Warning ! ! This will log you out of sites you're logged in to. You may also lose any settings for that website.

• Delete cookies to remove the information websites have stored on your computer {web link}

• How to clear the Firefox cache {web link}acking-protection-firefox-desktop

This issue is still exist. This is what I did and of course this doesn't help:

1) Firefox in safe mode 2) I deleted all cookies 3) I refreshed firefox (refresh option) 4) I deleted all files for firefox in Appdata (Roaming, Local, LocalLow) 5) I start Windows 10 in safe mode 6) I created other local user account in Windows 10

All above steps didn't help. I only did not delete keys for firefox in Registry Editor for Windows 10. I don't want to broke my system so that is why I didn't change anything in Registry Editor.

I think that this is problem with compability for Windows 10 20H2 because in Windows 10 1909 I don't have this problem with this website.

Are you currently using a version from the repositories of your Linux distribution? Try the Firefox version from the official Mozilla server:

https://www.mozilla.org/en-US/firefox/all/

I use version for Windows 10. I only report this bug from linux machine. I have firefox from Mozilla servers.

Use these links to create a new profile. Use this new profile as is. Is the problem still there?

https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible

http://kb.mozillazine.org/Profile_folder_-_Firefox#Navigating_to_the_profile_folder

https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Type about:profiles<enter> in the address bar.

I created new profile but this doesn't help. Problem exists.

I called for more help.

This bug is also affected me on Linux (Ubuntu 20.04 LTS) and on other machines (notebooks) also with Linux and Windows system.

Why people from Mozilla don't want help? No reaction from long time... I also noticed that a lof of webistes have problem with Firefox. For example IKEA website. Cart is not working properly on Firefox but on Chrome this works great.

Firefox shows a purple shield instead of a gray shield at the left end of the location/address bar in case Enhanced Tracking Protection is blocking content. You can click shield icon for more detail and possibly disable the protection. You can check the Web Console for messages about blocked content.

• https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop
• https://support.mozilla.org/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track

@cor-el I tried this and this doesn't help. I tried on second computer. Issue still exist.

This is not problem with Windows 10 because I tried on Ubuntu 20.04 LTS and this issue also still exists.

Microsoft Edge and Google Chrome don't have this issue so this is problem with Firefox but Mozilla people don't want help me. It is sad because I was fan of firefox. I used this browser from fifteen years but now I am disappointed.

Yesterday I noticed that this bug now is not affected me so this was problem with my internet provider or I think that some updates from Windows or Mozilla fixed this. Now I don't have this problem.

I can confirm that now this website works fine. Both on Windows 10 and Ubuntu. I checked also older version of Firefox. On each vestion website now works without issue. I suppose that this was problem with my internet provider or domain owner.

So this topic can be close.

Someone must close this subject because I can't find this option. Like I said now everything works fine.