Thank you for your reply!
Your comment kind of illuminated my problem for me – I use a child theme of Twenty Twelve with a Static front page. The static front page setting in the Appearance settings may seem to override the Custom Front page setting in WPSmart. When I deactivated the static front page setting it worked fine, but since I use the plugin Sidebar & Widget Manager the landing page on a PC/Mac is…. sub-optimal, to say to the least.
I would guess that the newfound question then would be if there is any way to make WPSmart’s custom front page override the static front page setting…..
The link is at https://bunheim.com/dev/ot/ – WPSmart is activated (with the desired custom front page), which is not appearing.