I paid 2x 40 USD and I didn't get any email with the activation number and the support doesn't respond at all, they are thieves and scammers !!!

Have you actually tried logging into the app with the e-mail you registered with?

The procedure is not at all intuitive.

When you log in, you should then be sent another e-mail with an activation link.

I've been using Televzr Pro for several years now, and it's never been a problem, so I would disagree that it's a scam.