On your computer, open Chrome.
   At the top right, click More More and then Delete browsing data.
   Choose a time range, like Last hour or All time.
   Select the types of information you want to remove.
   Click Delete data.
       If you delete cookies while signed in to Chrome, you won't be signed out of your Google Account.

Yesterday when I tried to open my gmail in Firefox I got this page coming up Clear cache & cookies When you use a browser, like Chrome, it saves some information from websites in its cache and cookies. Clearing them fixes certain problems, like loading or formatting issues on sites. Computer AndroidiPhone & iPad In Chrome On your computer, open Chrome. At the top right, click More More and then Delete browsing data. Choose a time range, like Last hour or All time. Select the types of information you want to remove. Click Delete data. If you delete cookies while signed in to Chrome, you won't be signed out of your Google Account. I'm concerned about deleting data, it's always worked until yesterday. Should I follow these instructions?