SprocketPlusはsprocketアプリに接続しません

@rachelsknr, Welcome to the HP Support Community! Which device are you trying to connect the Sprocket to?Check for any software updates on the mobile device. Turn on the Sprocket and check battery statusThe Sprocket might have turned off or the battery might need to be charged. Use the HP sprocket app to check the battery status, and then adjust the Auto Off setting.

Press and hold the Power button to turn on the Sprocket, and then 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.
Under the Status section, locate Battery.

If the battery charge is 25% or higher, continue with these steps.
If the battery charge is 24% or lower, charge the battery for 30 minutes, and then continue with these steps.

Tap Auto Off to change when the Sprocket turns off, if necessary.

Confirm mobile device settings

Turn on the Sprocket.
On your mobile device, open the Bluetooth settings menu, and then make sure Bluetooth is enabled.
Check the settings on your Android or iOS device.

Android devices: On your mobile device, open the Location or Location Services menu, and then make sure the setting is turned on.
note:You can turn location permission on to connect and print, and then turn it off when you are not using the Sprocket.

iOS devices: Previously paired Bluetooth accessories such as Apple AirPods might interfere with the initial discovery of the Sprocket. Unpair the accessory from the Bluetooth menu of your device before initial pairing with your Sprocket. The accessory can then be paired again after the Sprocket is connected.

On your mobile device, open the HP sprocket app.
Tap the Menu icon , tap sprocket, and then tap Manage Printers.A list of available Sprockets displays.

If your Sprocket displays: The Sprocket is connected.
If your Sprocket does not display: Tap Add New Printer, and then tap the name of your Sprocket.

If the issue persists, Reset your mobile device and Sprocket
Refer to step 4 in this document. 
 
Hope this helps! Keep me posted. 
 
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