Chrome repeatedly closes ever since Avast installed

Hello Form,
I am a newbie and hope someone will recognize a solution to my problem. Ever since I installed Avast on my MacBook Pro, I cannot open the “workplace” dashboard of my eFax/email program, Updox.com. If I uninstall Avast, Updox opens and works fine. With Avast installed AND NOT enabled, Chrome still repeatedly closes preventing Updox workplace dashboard from opening. Enable, same thing. What to do?
Thanks,
Marc :frowning: