hello sinstranger, This issue can be caused by corrupted cookies or cookies that are blocked. Clear the cache and remove cookies only from websites that cause problems. follow the steps: '''Clear all cookies, site data and cache''' * Click the 3 horizontal line top right on browser screen and select Options. * Select the Privacy & Security panel and go to the Cookies and Site Data section. * Click the Clear Data button The Clear Data dialog will appear. * Click Clear. '''IMPORTANT:''' Restart firefox and computer. Thank you!