Please create a Joomla plugin that enables you to load a SPPB page witin the Joomla Content framework.
Simply by using placeholder {SPPB 3}
It load the SP Pagebuilder page with ID 3 within the Joomla content.
Also with the option to load it with or without custom CSS page styling. {SPPB 3 nostyle}
Hope this would be possible in the near future.
Thanks