READ ME: Google Calendar Integration - FIX!

GCalendar + OS Services Booking Integration Fix
This should fix the "Error: 0 - Authentication with Google Failed. Reason: BadAuthentication"
Here is a step-by-step solution with screenshots for a way to fix the errors some get when trying to setup Google Calendar with OS Services Booking

Step 1:
Google > Account > Security >
- Enable 2-Step Verification
Step 2:
Google > Account > Security >
- Connect Apps & Sites

Step 3:
Google > Account > Security > Connect Apps & Sites > "Generate new application-specific password" (I named mine "Appointment Booking") > click "Generate password" (Be sure to COPY or save the 16-digit password!)

Step 4:
Joomla Backend > Components > OS Services Booking > Employee Edit >
- Input GCal username
- Input Google password generated in step 3
- Input GCal ID if using a specific calendar, or leave blank to use the main/default calendar on the account (see Step 5)

Step 5:
Google Calendar > Select Specific Calendar > Calendar Settings > Calendar Address (ex: js28jdua284749@group.calendar.google.com)
- Copy the GCal ID and paste into OS Services Booking Employee Settings (see Step 4)

Hope this helps!!!