the payment was made through bank slip

Did you purchase Vegas Pro from MAGIX's website or from another website? The payment options to buy Vegas Pro on MAGIX's website are:

If your purchase was not directly from MAGIX's website, you'll need to contact the seller to address the matter. If you did buy Vegas Pro directly from MAGIX, you'll need to refer to MAGIX's support advice re this:

https://www.vegascreativesoftware.info/us/support/article/no-confirmation-email-received--649/

I bought in the same website

the payment was made through bank slip

Did you purchase Vegas Pro from MAGIX's website or from another website? The payment options to buy Vegas Pro on MAGIX's website are:

If your purchase was not directly from MAGIX's website, you'll need to contact the seller to address the matter. If you did buy Vegas Pro directly from MAGIX, you'll need to refer to MAGIX's support advice re this:

https://www.vegascreativesoftware.info/us/support/article/no-confirmation-email-received--649/

I bought in the same website and I saw the spam and don't have any e-mail from Vegas or magix there

Você pode tentar procurar na pasta de spam. Às vezes, esses e-mails são detectados como spam.

Você também pode entrar em sua conta no Magix, que deve listar seus produtos lá.

I am already saw the spam and in my magix account just have the Vegas pro trial key, and nothing else

When you say 'bank slip', what does that mean to assist those in other countries where that is not a common term? Do you mean that you paid by cheque, or by a direct bank transfer, or something else?

When you say 'bank slip', what does that mean to assist those in other countries where that is not a common term? Do you mean that you paid by cheque, or by a direct bank transfer, or something else?

I search on internet what does "boleto bancario" means in English and I found this term but is something like that a bank transfer

From Google translate, 'oleto bancario' means 'bank slip'.

But you say that you purchased via:

I'm not seeing 'bank slip' or 'oleto bancario' mentioned anywhere there in that information. I'm just seeing credit card information. Very odd.

Again, if you purchased directly from MAGIX, lodge a support request via:

https://www.vegascreativesoftware.info/us/support/article/no-confirmation-email-received--649/

Is there a reason that you are reluctant to do this?

how do I open an application through this link you sent me?

Start off with 'Ask Support' and follow the very convoluted Q & As to drill down to the issue. Agreed that its not user friendly, but no Vegas Pro forum user designed it - at least I hope not.

Admittedly it is "convoluted" but I've seen reports that users have gone through the process and survived.

É certo que é "complicado", mas tenho visto relatos de que os usuários passaram pelo processo e sobreviveram.

if I get my product so I can study or if they send me a refund, that's great

I've seen reports that users have gone through the process and survived.

Thank you @vkmast for giving me a laugh. One third of those on board the RMS Titanic survived as well. Sorry to be so flippant about that terrible disaster.