QR Scan Process

Hi , I have create backend apis for xumm signin and payment which i am doing using payload and in case of mobile app its working fine.
now i have webgl app which is using same api but in that case return url is not working because when user redirect to deeplink and user scan from mobile after scane it redirect back in mobile browser , i want to keep user desktop browser close the current process and redirect back in my webgl appp.

Please guide me this