This site is very helpful and you can search for specific problems you are having.
Students must use their school-issued Google for EDU account at home. The following are recommend:
-clear out the browser cache
-log out of the Google account
-disconnect the account from the browser
-login to the Google account again
-verify the username and password
-try incognito mode
-be sure you are using the most up to date Chrome version.
If you are having issues getting into Google feel free to contact me. I can call you and try to walk you through it. My e-mail is Tasha.Strigle@marion.k12.fl.us