Assistance requested with workbee 1510 homing problems

Hi. I am a novice CNC user and just finished building my first machine; an OpenBuilds WorkBee 1510 with a Dewalt router. I'm stuck and don't know how to solve my homing problem....
I'm able to jog the machine in the correct directions in all 3 axes, using the control panel, but am unable to home the machine. If I zero all coordinates and move the machine, I am able to get the router to return to my zero setting.
However, when I press the homing command button, the unit moves erratically and then the following message appears:

! ALARM: 9- Homing fail. Could not find limit switch within search distance. Defined as 1.5 * max_travel on search and 5 * pulloff on locate phases [ $H ]

I've tried to fix this issue for almost a week but have been unsuccessful.

I also tried to run the open builds HELLO WORLD file by defining the zero coordinates without homing the machine and the error message read:
! ALARM: 3- Reset while in motion. Grbl cannot guarantee position. Lost steps are likely. Re-homing is highly recommended. [undefined]

I would greatly appreciate assistance to solve this problem.

 

Here are the settings listed on the settings page of the Openbuilds CONTROL v1.0.143: Please let me know what you think. Thanks Curtis

Openbuilds Workbee 1510: Limit Switches Installed: button turned ON
$0=10 (step pulse, usec)
$1=255 (step idle delay, msec)
$2=0 (step port invert mask:00000000)
$3=invert X is white, Invert Y & Invert Z are black, button to the right
$4=1 (step enable invert, bool)(Board V1, V2, V3 Matte = $4=0 - Glossy board V3 = $4=1)
$5=0 (limit pins invert, bool)
$6=0 (probe pin invert, bool)
$10=EMPTY (status report mask:00000010)
$11=0.020 (junction deviation, mm)
$12=0.002 (arc tolerance, mm)
$13=0 (report inches, bool)
$20=0 (soft limits, bool)
$21=0 (hard limits, bool)
$22=1 (homing cycle, bool)
$23=3 (homing dir invert mask:00000000)
$24=2000.000 (homing feed, mm/min)
$25=1000.000 (homing seek, mm/min)
$26=250 (homing debounce, msec)
$27=1.000 (homing pull-off, mm)
$30=1000 (Maximum spindle speed, RPM)
$31=0 (Minimum spindle speed, RPM)
$32=0 (Laser-mode disabled, boolean)
$100=199.098 (x, step/mm)
$101=199.1 (y, step/mm)
$102=199.100 (z, step/mm)
$110=2500.000 (x max rate, mm/min)
$111=2500.000 (y max rate, mm/min)
$112=2500.000 (z max rate, mm/min)
$120=50.000 (x accel, mm/sec^2)
$121=50.000 (y accel, mm/sec^2)
$122=50.000 (z accel, mm/sec^2)
$130=320 (x max travel, mm)
$131=525 (y max travel, mm)
$132=68 (z max travel, mm)