Reading String from BLE Arduino

MIT App Inventor Help
1

Hello everyone,

I've been stuck trying different things over the past week for getting a basic app to read a string and separate it into various labels. I am fairly certain my Arduino code is operating correctly and the setup in the MIT app is where my error is, but it could be I don't have the ServiceID or CharacteristicID setup up in my code. I've been struggling to figure that out. My code is a bit extensive but it is below as well at my .aia file. Any help is much appreciated. This is my first attempt at building an MIT app.
Main Hardware:
Adafruit QT Py RP2040
Adafruit Bluefruit LE SPI Friend - Bluetooth Low Energy (BLE)

GardenBoard.ino (14.1 KB)

GardenBoard_R0.aia (286.5 KB)

2

When you are working entirely in the dark, it helps to get a general purpose BLE app like nrfConnect to show what (if anything) is coming out of your hardware.

Hopefully, it would show the UUIDs along with the data.

3

Is there any other guidance on this. I'm still stuck and lost.