Note: Picostrap theme installed along with this plugin.
A starter theme that builds your very own Bootstrap 5 CSS just using the WordPress Customizer. Built from the ground up for high performance.
picostrap.com
Have fixed it to work with this as my testing setup.
The separate header and footer editor parts in the settings page above seem to work fine for me.
Whilst finally, the 'Create new LiveCanvas Page Draft' also works for me when choosing starting from scratch.
If I do the above and go through 'yes, browse templates' option then I get bad request. This is probably due to the licence and API keys being used here are not genuine and so can't access any template library with false details.
You can still use the readymade library through the editor option on the left side and add it as a new section, just can't use it to browse at start or through the 'readymade pages library' in the top right options menu.