Please follow the below steps and try again.
Replace the batteries with brand new ones (which you’ve never used before);
Check that the batteries are correctly installed with the right position of sign “+” and “-”;
Remove the batteries, wait for 3 minutes, reinstall the battery;
Insert the test strips correctly with the printing facing up and push it into the strip port until it stops; (Please use the safe Accu 2 test strips and insert strips in a correct direction )
If it still can't work, please contact us at support@sinocare.com immediately.