Download and Install Nox
Navigate to settings (cog icon), click on General and select Root.
Download Magisk-Delta and install the APK
Open 'Magisk Delta', Grant SU/root access to Magisk Delta, click “Install” under Magisk field and use “Direct Install into system partition” option instead of “Direct Install” option. If you don’t see this option, close and re-open Magisk Delta app. If that doesn't work, restart the emulation.
Disable Root access that we earlier enabled in the Nox emulator settings (using the cog button top right of Nox). Restart emulation.
Download LSPosed Zygisk module and install it in Magisk in the modules tab. Restart.
Download and install My 7-Eleven APK
Download and install Fake GPS
Open Magisk, go to settings, enable 'Zygisk' and 'MagiskHide', then click on 'Configure MagiskHide' and select 'My 7-Eleven'. Restart.
In the File Manager (Amaze), navigate to the hamburger menu, go to Root, then data>adb>lspd
Copy 'manager.apk' then paste it in the Download folder and open it to install the 'LSPosed Manager'.
Download and install "Hide Mock Location" LSPosed Module
Open 'LSPosed Manager', go to the modules tab and open 'Hide Mock Location' and select 'My 7-Eleven'
Back in 'Magisk', go to settings and click on 'Hide Magisk', enable Allow from this source
Navigate to Settings, scroll down to About Phone, scroll down to Build Number and click it 8 times to enable Developer Mode
Go back one page and navigate to Developer Options
Search for Select Mock Location App and choose 'Fake GPS'
Open 'Fake GPS', go to the hamburger menu and select Go To, then paste the GPS co-ordinates that you got from Refinery
Open 'My 7-Eleven', login, and lock your price in.