Main Password

Everyt time I hit the avast app on my computer, I get a sign in blank asking for my “Main Password.” when I insert the main password that was given to me when I signed up, it will not accept it. Help!

You don’t get a password when signing up.
You have to set it yourself.
If you forgot the password, you need to perform a clean installation of avast to reset it.

Repair Avast:
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204
If Repair doesn’t fix the problem, try the following:
Clean Install of Avast:
https://goo.gl/4Ptzkf