Hi, im new there, so i do not know if i placed my problem to the correct category

i am trying use my laptop screen as wireless screen for android device (lenovo a3500-fl)
i use this tutorial as gudie: How to Cast Your Windows or Android Display to a Windows 10 PC
when i for first time try to connect my android to the pc, everithyng works like a charm.
but when i diconnected my android device, and tryed to connect again, it does not work, and still is not working.
now, when i try to connect, android device say "connecting....." but the computer does not respond to it at all.


and yes, there is a notice "This device might have trouble displaying your content because its hardware wasn’t specifically designed for wireless projection” but it worked for first time, so why?

hope you help me, and sorry for my bad english.