Mozilla is blocking needed websites
When I try to use needed tools on websites, Mozilla is blocking the page from opening. USPS will not allow me to track a package. When I enter the tracking number, the page just sits on white and the search just spins
Wšykne wótegrona (1)
I have no issue looking up an old tracking number from USPS. see screenshot
Did you try Firefox in Troubleshoot Mode? https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#search104
Try to clear all items for a single site. https://support.mozilla.org/en-US/kb/remove-websites-address-bar-suggestions