Here is a new mockup you can use in ScreenshotX.
https://junesiphone.com/screenshotapp/mockups/ron.zip
Open ScreenshotX, press options and Get Import Location. Unzip the zip above and place the 2 files .png and .cfg in the Get Import Location address.
or
Open ScreenshotX, Browse Mockups, Select Mockup and download the zip, unzip the zip, go to import mockup and import the .png and .cfg
More Info
https://www.patreon.com/posts/install-on-stock-43848081
Other changes
Removed all ads from https://junesiphone.com/screenshotapp/mockups
Photo
https://unsplash.com/@ronmcclenny
P.S. If you would like me to convert a photo to a usable mockup please let me know below. I wouldn't mind doing it for you.