Nao recebi atualização

paguei avast premium , a fatura caiu, mais nada atualizou aqui, nao recebi nenhum email

First, I’m an Avast user and not an Avast Team member.
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Is it possible that you entered the email incorrectly ?
You could try this if it is a possibility.
Start here: - Contact Avast Support - Select Account and Billing - Account Help - From the drop down Select Reason > if applicable and or click the Get Support button. - This should give the option of Phone or Chat.

Or - Troubleshooting License Activation problems - https://support.avast.com/article/Troubleshoot-activation

These links should detect your language and hopefully give the correct language or an option to switch.
Although this image is in English the selected options are or should be in the same location.

Or check out this google search - how to register Avast antivirus with the wrong email address given