Anyone else have a hard time with this machine? It seems like every time I put a test strip into it- some kind of error happens! I’ve given it enough blood before and I’ve still gotten an error message- saying I didn’t, or just error messages for no reason. Tonight I wasted 5 strips - And at $2 a strip... I don’t know if the test strips I have are somehow defective or what. This is the third bottle I’ve gone through where about only 2-3 of the strips in the bottle worked properly.