Something broke. Something won't connect. Something you set up three months ago suddenly won't work — and you have no idea where to start. The Techie reads the error messages, the docs, and the forum threads so you don't have to.
Your booking page stops accepting new appointments. Instead of Googling error codes or paying a developer to poke at it, you paste the error into the Techie. It tells you the time-zone setting on your calendar integration got reset, walks you through the fix, and warns you about the two other places that setting might still be wrong.