Honestly, I've been scared to try that, since it was preinstalled on my SP4. Read about too many people having issues with it not showing up.
I'm not 100%, but it sounds like it could be a Windows Store issue. Ran through several fixes and Drawboard still won't show up for updates.
My Drawboard version is currently 126.96.36.199 and I know there have been several updates since this but, unlike the past, it hasn't updated automatically.
Going to the Windows Store and checking for updates manually doesn't show any apps available. I'm not sure how I can get...