I have the same issue. I put unlimited activation API key in, click verify, and it just refreshes without the API key being verify, and removes the API key from the page. No error message, no warning
I don’t understand either , I paid 10$ for a license and I didn’t get any mail or stuff that send me the API. On paypal my payment succeed but when I came back on the API’s website they send that the payment didn’t work !