Many issues that happen within web browsers are based on old data that is being stored. This is called cache. Try clearing/resetting this, and see if this solves your issues(s).
How to refresh your cache:
For Chrome: https://support.google.com/chromebook/answer/183083?hl=en
For Firefox: https://support.mozilla.org/en-US/kb/how-clear-firefox-cache
For Internet Explorer: https://kb.wisc.edu/page.php?id=15141
For Safari: https://guides.instructure.com/m/4214/l/60429-how-do-i-clear-my-safari-browser-cache