Jtech 24w Laser Always Firing - Cannot turn off

Have you all experienced an issue where the laser is always ON (firing) when turned on. Double checked connections. It was working at one point but not anymore. The TTL switch is active and cannot send GCODE commands to turn the laser off with the M5 command. Tried using UGS, Lightburn to send commands but nothing. I was using Vectric Vcarve for a CNC project and then tried using the Jtech laser and that is when I started having problems. I can jog the machine using UGS and Lightburn. Here are my GRBL settings.

$$
$0=10
$1=255
$2=0
$3=2
$4=0
$5=0
$6=0
$10=0
$11=0.010
$12=0.002
$13=0
$20=0
$21=1
$22=1
$23=1
$24=50.000
$25=800.000
$26=200
$27=5.000
$30=1000
$31=0
$32=1
$100=57.288
$101=57.288
$102=200.000
$110=16510.000
$111=16510.000
$112=4570.000
$120=1470.000
$121=1470.000
$122=700.000
$130=900.000
$131=900.000
$132=100.000
ok