Well, its happened again. No reminder, so after 3 years it had slipped my mind. Nasty email yesterday saying licence will be revoked !, but also attached was the invoice that i never received so i just paid it. Put in my email address for a receipt and.. you've guessed it, no receipt issued.
They are a joke !
Edited to add.....
Apparently there is an online portal, i registered and found my licence is now valid.