Activate license on Mac OS High Sierra

Hi! I´ve just bought the Business licence and in the mail is written that I do not need a licence key to activate my licence. Obviously this might be true for Windows but not for Mac OS...? If I click in the menu to activate my licence I have to type a licence key... Please tell me what to do because I need the Team Viewer and I cannot wait until I get the bill...

Thanks!

Just got it! Problem is solved! Sorry for inconvenience...