Hi Everyone 
If Anyone Know Working UPI .AIX Or Payment Extension Please Give Me .
Try a search in the extensions directory App Inventor Extensions | Pura Vida Apps
Taifun
Free .Aix Not Available For Payment All Id Paid UPI , Rozarpay ( this is free but Not work : [Free] UpiPayment Extension - Extensions - MIT App Inventor Community )
Some thoughts of why some extensions are paid…
You can start learning all you need to learn to do it, then do it, after long days of trying things, testing and failing, all in your spare time, leaving other things you like to do for this.
Then after all that time and intellect invested, just give it out for free so everyone can make money with it except you.
Sounds awesome right?
By @Italo
@Kabir_Khan1 what did you contribute to the community for free up to now?
Taifun