I wanted to use mit inventer in my mac but not getting install

MIT App Inventor Help
1

I have install version 3.0 in my mac 12.7 version but its showing successfully install but not
locking in system what should i do.

2

Hello, we are unable to view the app after installing in mac os 12.7 monterey version. Please assist.

3

Please describe your issue in further detail
Are you trying to use the companion or emulator (depends on the chip: Intel/Apple)?

4

i am using campanion but it saying

when i scan my project with AI2 campanion
This is error

This project was saved with a newer version of the App Inventor system.
We will attempt to load the project,
but there may be compatibility issues.

using Intel

5

When you attempt to connect to the Companion, are any errors thrown?