Try these troubleshooting steps:
Chrome
Click the 3 dots (Mac) or exclamation point (PC) in the upper right corner of the browser.
Hover over the More Tools option then click Clear Browsing Data...
Choose The Beginning Of Time or lesser time frame in the “Clear the Following Items From” field.
Select the items you want to clear (e.g., Browsing history, Download history, Cached images and files, Cookies and other site data).
Click Clear Browsing Data.
Firefox
Click the hamburger menu in the upper right corner of the browser.
Click Preferences (Mac) or Options (PC).
Click Privacy in the left menu bar.
Click Clear Your Recent History.
From the Time range to clear: drop-down menu, select the desired range; to clear your entire cache, select Everything.
Click the down arrow next to “Details” to choose which elements of the history to clear.
Select Browsing & Download History, Form & Search History, Cookies, Cache and Active Logins
Click Clear Now.
Internet Explorer
Click Tools, and select Delete Browsing History... .
Deselect Preserve Favorites website data, and select Temporary Internet files, Cookies, and History.
Click Delete.
Safari for Mac
Click the Safari menu, then Clear History...
In the Clear field choose All History
Click Clear History.
Chrome
Ctrl-Shift-N (Windows) or Command-Shift-N (macOS).
... or click on the menu on the upper right (the three dots) – and select New Incognito Window
Firefox
Ctrl-Shift-P (Windows) or Command-Shift-P (macOS).
... or click on the menu at the upper right (three lines) — and select New Private Window.
Internet Explorer
Ctrl+Shift+P on your keyboard.
... or click the gear icon in the upper-right corner then Safety > InPrivate Browsing.
Safari for Mac
Command-Shift-N
... or click on File on the top menu and select New Private Window.