The page of Single Configurator Is Not Mobile Responsive
Article Number: 000053612 | Last Modified: 2018/11/21
Created a url for the sheet in Single Configurator, then copy/open this url from the web browser. Press F12 then select mobile device, for instance iphone 6.
The page still shows the exact same as when it shows for PC. The display does not get changed or adjusted according to the mobile device size.
Sheets via Single Integration API is not responsive and has never been implemented as such. The individual objects fetch via the Single Integration API are responsive, but a sheet will have a fixed layout.
So the workaround is to get the url for individual object then put them into the iframe.