Instant Ink trial enquiry

[statician12]

Hi, I am new to this forum and recently bought the new hp deskjet 3237 printer. Registered for 2 months free instant ink trial then realised that I can use one of my fried's referral code to extend for another month but I dont know where to enter this promotional code. The system doesn't give me an option to put another code and I have already registered for 2 months free trial. 

Anyone know if its possible to use referral code after enrolling for first 2 months free trial?

[Sunshyn2005]

You can share your code and get a free month for everybody who joins @statician12, but once you are enrolled you can not add a referral code. I can however help you. 
 
Please provide me with either you Instant Ink account or the email address you used to enroll. I ask that you do not post this information publicly, instead, send me a private message. Also, include the referral code in your private message to me. 
 
How To Send A Private Message - https://h30434.www3.hp.com/t5/First-Time-Here-Learn-How-to-Post-and-More/How-To-Send-A-Private-Messa...
 
Cheers,
Lisa
 - HP Instant Ink Support