Hi @cheryl19581108,
Welcome to HP Support Community.
Thank you for posting your query, I will be glad to help you.
If your printer displays an "error: printer needs to be enrolled in HP Instant Ink," it means you are trying to use HP Instant Ink cartridges in a printer that isn't currently subscribed to the HP Instant Ink service;
I recommend you turn off the web service using the steps from this link: https://support.hp.com/in-en/document/c04808536
Please uninstall the HP Smart app --> restart the Device, Wi-Fi router and printer --> install it back and add the Printer back, login to the HP Instant ink account and check
I hope this helps.
Take care and have a good day.
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VikramTheGreat
HP Support