I had this issue with the Islander install, I haven't got the SR22 but it may be the same.
I use a util to make the text bigger or small under Win10, it allowed you to set font size for icons and message box. I had set the message box to a to higher size and when that box came up it would only show the entry for email and was missing the serial no. box which you cant see or access. If this is the case reset your font sizes to default, you can set it back after the setup.
You may be getting something different but its worth a try doing what I said.
Anthony