I have a clean install of Joomla 4 in a subfolder of my live site. In the J4 install I have SP Pagebuilder 4.06 . When, in the backend of Page builde, I press Add New Page, give the page a name and press Save & go, Page Builder takes me to an URL which is not in the Joomla 4 subfolder anymore, but instead in the live site and this URL gives a 404. I have tried changing the live_site parameter in configuration.php and also the RewriteBase parameter in .htaccess but these do not help. The URL created is in the form https://www.mylivesite.fi/en/?option=com_sppagebuilder&view=form&layout=edit&tmpl=component&id=15 . Should be https://www.mylivesite.fi/myjoomla4subsite/en/?option=com_sppagebuilder&view=form&layout=edit&tmpl=component&id=15

What is wrong?

Joomla 4.2.5, SP Page Builder Pro 4.06

Thanks, Benjamin