Hello 
I'm beginer.
I used a bit appinventor few years ago, and that was so easy
Today, I started a new project, but I'm unable to install it 
Now, to test, I just put a button.
I generate an .apk
I download it by the QR code.
I open it.
Ask to install.
Google play Protect tell me that's a no secure app.
I ask Google play Protect to install anyway.
And I have a message "test" (my app) "Application not installed" "ok"
If I use "MIT AI2 Companion"
After QR code, the process start, but I have the message :
"network error" "The companion has disconnected"
If I use USB
"aiStarter assistant seem no work"
If I use "aiStarter" (an emulator ?)
My app work. But I would like to install it on my phone …
I tried "LookTest" to test appinventor .apk on my phone, and that work fine !
My phone is a Xiaomi Redmi Note 10 Pro (M2101K6G)
Android 12 SKQ1.210908.001
MIUI 13.0.16
CPU Snapdragon 732G