licence #

I register but i don’t get a licence # sent to me???

What product exactly did you register?
Are we speaking about avast! Home?

Yes, just the basic free plan. Supposed to get a # sent that makes it good for a year and never got it .

Do you use a spam filter or more importantly does your ISP use an automatic spam filter.
What is your ISP ?

Ensure that you add avast.com to your whitelist I think it is register @ avast.com (without the spaces).

What was the domain part (without your personal email bit) of the email address, e.g. meuser @ domain-name.com. You could register again using a different email address or just use the Demo registration key which will give you 60 days unrestricted use. Plenty of time to receive the proper registration key, give it a few days and try re-registering.