Had this problem for weeks and support trying to resolve it . Logging in to site from old desktop , Avast home page was all I got .Unable to access any sections or log in .As one of the suggestions , generated a support package (all o.k ) and fired it off . Got an e mail tonight saying going to close ticket as not had reply so repeated and submitted another support package . Then I had a thought , what about switching over to Chrome and trying ? Bingo !!! working fine from desktop from where I’m posting now .
P.s
What would be the best way to contact Avast support to let them know all is well ?