Hello, i solved the problem.
My english isn’t so good, sorry, i am from Argentina.
The thing is that you are using a Characteristic on de BLE that isn’t READ. Most of the BLE modules have a Characteristic that NOTIFY when the register change.
I use a ESP32 with Arduino
Fist, i was having the error “operation was rejected” because I created a Characteristic as NOTIFY
I make it work when i defined the Characteristic as READ.
i hope it helps you because i lost several hours with this.
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