There are multiple options to have ShortPoint element in full width section and page.
Option 1: Full width feature in ShortPoint
You can use ShortPoint feature called Force Full-width Screen to have ShortPoint covering full width of your classic or modern page.
Option 2: Full width column
In edit mode of your Modern Page under communication site, add Full-width column section:
You can add ShortPoint web part in Full-width column:
Select it and you will get full width of the page:
- This option is applicable only in Modern Page under communication sites
- This feature is available in ShortPoint SPFx Version 188.8.131.52 and higher
Option 3: Hide quick launch for Team Sites
Although this is not going to cover entire screen width but using this option, you can hide the Quick Launch menu of your Modern Team site.