HP instant ink problems - Cartridge cannot be used until printer is enrolled - error message

Hi, I enrolled a new printer in december for instant ink, but have only be using the supplied stock cartridges until march. I have now installed the instant ink carts but the printer says not enrolled, even though it is.

I have been onto live chat last week who after going through factory reset and all other checks, sent me out more new cartridges. Fitted them today and its still the same.

Logging on the instant ink page and printer is showing enrolled but looking on the printer display and it says printer needs to be enrolled.

Can anyone suggest anything else?.