Please make sure that you paste in both the name and the key exactly as shown in the mail you got, Name INCLUDING THE E-MAIL ADDRESS. It’s best to copy and paste the whole line. There is an example image attached to the key e-mail that shows how the dialog is supposed to look like after pasting in the data.
Also please check for leading or trailing whitespaces after pasting in the data. Those might cause problems.
If that does not solve your issue (it almost certainly will), please send a mail to support |at| vorpx com.