From our plugin interface in API Key tab, you will find Generate Lite Key button. From there you can generate lite API key. Lite key allows you to upload single font.
Can you please check your email. ds######ux@ph######ity.com ? I have resend the key in this email. Please check spam / junk folder if it is not in inbox.
Also, please make sure there is no space before and after the key.
The API key was send in your email . Can you please check your junk / spam folder if it is not in inbox ? ALso. have replied back your email with the API key.