Instant ink payments not reduced

[Angie5311]

Reduced my plan as had over 700 pages left .Now it says on new plan and reduced pages allowed to print  but still charged me the old price for the month why? 

[BeemerBiker]

I am guessing the change take place at the end of the current billing cycle.  Contact a site or call using numbers linked to at the bottom.   Click here for: Rights in the UK

This is all I know about Instant Ink and other subscriptions.

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I do not have an instant ink printer. My understanding is that if you run out of ink, or you cancel your subscription, you can use genuine Hewlett Packard cartridges either original or refilled. They must have an HP chip in the cartridge.
The below type is unlikely to work.

Note that this is a peer to peer forum and I am just the messenger of this bad news: Instant ink cartridges can only be used when the ink subscription is active.   HP is not the only company that wants their own ink used. The last time I checked, Epson, Canon and Brother all do the same.

For official help (but skip to bottom for phone numbers)

Try here at the Get HP Instant Ink Support Website
Contact the team at HP Instant Ink Support during business days and hours available in your region.
General help on instant ink management

Some HP printers can use non-HP ink if the firmware is not updated.

Cannot connect to Instant Ink web services

Instant ink portal is here.

Below are some official guides that might answer one or more of your questions

Instant Ink account management

Solve Instant Ink cartridge and printer problems

Instant Ink shipment questions

Fixing Instant Ink cartridge errors

Enrolling in HP Instant Ink

Cancel your ink account

HP printers - Fixing Instant Ink enrollment error codes (HP Smart app)

HP printer ink cartridge issues including 'Incompatible', 'Missing', 'Failure' and enrollment errors

Check HP printer ink or toner levels

Terms of service including phone contact information

Instant Ink - Terms of Service - USA
Instant Ink – Terms of Service - UK
TERMINI DI SERVIZIO DI HP INSTANT INK - Italy
Instant Ink - Terms of Service - Ireland
CONDITIONS GENERALES D’UTILISATION DU SERVICE HP INSTANT INK - France

While HP Instant Ink printers can be used with no subscription, select HP Plus printers may require a subscription to operate.

Let me know what you find out.

[Bob_Headrick · Accepted solution]

The billing for HP Instant Ink is in arrears, it hapens at the end of the billing period.  If you change your plan during a billing period the last bill will reflect the previous plan's charges, the new charge will be reflected in the next cycle. See section 7 of the terms of service here.