Clearing cache and cookies
I have had problems with just one website for the last few months. Their technical department said that I should clear cache and cookies related to this site. How safe is this? What cache and cookie items are OK to remove? An alternative suggestion was to use the Chrome browser for this site rather than Safari. I have Safari Version 12.1.2 (12607.3.10). Advice required, please!
iMac 27″, macOS 10.12