It is normal for a "Low toner " message to appear when using HP "No chip " compatible cartridge which is replaced with a HP used original chip. you can ignore the message and continue to print.

HP laser printers read the cartridge chip to identify the correct cartridge installed  and the chip records toner usage information, the toner level on the chip cannot be reset . It is normal you will get the low toner level message. But HP laser printer have a "very low setting" feature, you can set a very low setting to continue, ignore the low toner message and continue printing. 

You can confidently to use the Moustache No chip cartridge, it was fill with full level toner and meet the page yield standard.

Please find the video for reference on how to remove the chip from a used HP original cartridge and follow the instruction to install the chip correctly.