Activation membership

Hello

i went to pay for one month member, i have d/l the wpmu dev plugin dashboard and activate it ...
i fill the form to have my API key ... but i don't receive it

Payment Transaction ID: xxxxxxxxxxxxxxxxxxxxxxxxxx

in my account i just see an API key free membership

i don't receive any api keys by email or ... and i don't see in the wpmu dev dashbord where is possible to enter any API keys

tks to help me asap
Regards