纸卡住了

Hi @Tinnzzy,
 
I read your post and understand that you’re facing a paper jam error and you have tried the steps in the paper jam document.
 
I’d like to suggest, the sprocket reset to resolve the issue.
 
Follow the below instructions-
Reset your mobile device and Sprocket
Reset your mobile device and Sprocket to clear any error states.

Turn off your mobile device, and then turn it back on.

Turn on the Sprocket.

Remove the Paper Cover, and then use a narrow object, such as a pen or paperclip, to press and hold the Reset button for 3 seconds until the Sprocket turns off.
NOTE: 
The location of the Reset button varies by Sprocket model. Typically, the button is located underneath the Paper Cover, but can also be found on the outside next to the charging port.

Example of resetting the HP Sprocket Select Photo Printer

 
Upgrade the Sprocket firmware
HP regularly releases firmware updates. Upgrading the Sprocket firmware might resolve the issue.

Make sure the Sprocket is on and your mobile device is connected to the Internet.

On your mobile device, open the HP sprocket app.

Tap the Menu icon , and then tap sprocket.

Tap Manage Printers, make sure your Sprocket is selected, and then tap Printer Settings.

Look for a firmware upgrade.

If a firmware upgrade displays, tap Get Firmware Upgrade and then follow the on-screen prompts to complete the update.

If a firmware upgrade option does not display, the firmware is up-to-date. 

Hope this helps!
 
And, Welcome to the HP Support Community. 
 
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