I hope you can get help from support Barry, though there really hasn't been any Phereo support member posting to this forum for years now as far as I'm aware.
License numbers are supposed to be sent by email after purchase, though I'm not sure if it comes by way of a second email or was supposed to be included with your payment receipt.
Make sure to check any spam trash bins if you are using email filters, just in case an email containing the license was placed in one if you use any.
Have you tried to contact support here to inquire yet =>
support@phereo.comRegards,
~ Craig ~