UART Wifi module setup
How you have tested the module with computer?
Is it in transparent mode?
If the module is working as transparent mode it will convert wifi data to UART on your Arduino or PC UART port that's why it is called plug &amp; play.

there is inbuit webserver on the nodule you can connect it to the PC through UART, and check with the WiFi Software test it. This way you can get idea whether it is working or not. You can make it work as STA or AP using the same software. Give it a little try.

I am not able to download manual. can you share it here so I can read and let you know the solution of your problem?