Cannot create a sidebar boost on mobile
There is no option to create a sidebar boost on mobile. Perhaps because there is no sidebar in mobile, however, many users want to control the entire app including web app experience from mobile.
If you boost from a post on your channel page, there is no option to select sidebar.
If you boost from mobile boost console, there is a sidebar option, but only boost history an status may be viewed and recently uploaded content does not appear, and there is no boost option.
Recommendation is to allow mobile users to sidebar boost in both the mobile console and an option on the post to boost to sidebar.