How can i find my licence key?

Dear TeamViewer, why do you insist on creating documentation that nobody reads?
And why do not you answer accurately to people who describe their problem in two lines (the second is for greetings)?

Pre 13

After (no key)

(difference between Business, Premium and Corporate!!!)

And why did you put all the licensing issues in a section called Licensing?

I hope you can find the time to answer me, improve the product, celebrate the birthdays of colleagues, take care of the things that are closest to your heart and so on...

Regards