Unable to remove old printer from Instant Ink "Printers" Page

[JamesK75]

Hello All,
I’ve got a problem with removing an old Envy Photo 7100 printer from my HP Instant Ink account. I sold the printer around 2 years ago, and replaced the printer with a new Envy 7200 printer. At the same time I moved the instant ink enrolment from the 7100 to 7200.
According to the HP Support Document I should goto the HP Instant Ink Account Dash board, and select Printers. From there I locate the printer I want to remove, expand the Printer Options menu, and select Remove Printer.
The problem is for the 7100 there is no option to remove the printer. If I expand the options for the 7200, there is an option to remove the printer.

For the 7100, under the printer options, there is only an option to ‘manage printer settings’. If I select this, it takes me to a support page for the 7200!

So to me there’s something clearly a bit messed up on the HP back end.

I’ve raised this a few times with HP who try to guide me through the process above and are then surprised there’s no option available to remove the printer - which I explain is the whole reason for me raising the case. Eventually they seem to give up, direct me to the HP app, and go through the process to hide the printer in HP app.

The 7100 is definitely not attached to any Instant Ink subscription as it continues to show it as a printer that is available and can be enrolled in a new subscription:

I have checked on the HP Support Dashboard, to check devices registered to me, and it only shows my current printer. There is no mention of the 7100 there at all.

Is there a way to remove the 7100 from my Printers page on Instant Ink?