Deep Link Problem / Required

Hello dear Friends , Actually I Need a Deep Link Extension For My App To function But the Problem is that I tried all the Extension Maker and YouTube videos no one works Some were working earlier but not when I upload those extension and export the app the error comes"Invalid Package name " Something but I need a deep link extension for my app can any one help me

Please anyone help me out I basically want a deep link extension free which supports latest Android version

I tried it but it’s not working

Anything other option , can anyone make for me

Did you tried it?

Yes but it also didn’t work