Mit App Inventor emulator doesn't work well

When loading the emulator with an application, it doesn't go from there, it's been like this for a long time and it doesn't do anything. What can I do with that problem?

Look down at your task bar to see if a new program has started running on your PC.
The window you showed us is for a background process, to help diagnose emulator problems, and not the emulator itself.

Sample startup video(s) are in

Did you use App Inventor to link the Emulator like this after starting the emulator aiStarter

emulatorStart ?

See Step 3 in Installing and Running the Emulator in AI2