Thanks for engaging in HP support Forums! This is a wonderful location to converse with the community, get assistance and find tips! I understand you are having issues with your HP Sprocket. Don't worry I'll be glad to help you with this.
To provide you with an accurate solution, I'll need a few more details:
Are you having issues installing the HP Sprocket app on your Android phone?
What exactly do you mean by draw heart to pull out card? Is the Zinc paper stuck inside the printer?
Could you please elaborate more on the issue as this will help me in further assisting you?