Open Safari
Click Safari in the menu bar
Select Settings
Click Privacy
Click Manage Website Data
Click Remove All
Confirm by clicking Remove Now
Open Chrome
Click the three dots in the top-right corner
Select Delete Browsing Data
Choose a time range
Check Cookies and other site data
Click Delete data
Open Firefox
Click the menu button
Select Settings
Click Privacy & Security
Scroll to Cookies and Site Data
Click Clear Data
Check Cookies and Site Data
Click Clear
Open System Settings
Click Privacy & Security
Review browser and app permissions if needed
Restart the browser after clearing cookies