Hello

Thank you for your query. Yes, SP Page builder 3.8.6 is compatible with Joomla 4. You can check the changelog and documentation link as well:

https://www.joomshaper.com/downloads/extension/sp-page-builder-pro

https://www.joomshaper.com/documentation/sp-page-builder/sp-page-builder-3

And, kidzy template along with all our templates and extensions, will be made compatible with Joomla 4.

thanks, do you have any idea when it will go to joomla 4. And can I already start this in joomla 3 and if there is an update to 4 I will lose a lot so that I have to recreate the whole site.

Hello

Thank you for your patience. We don't have a concrete date yet. However, we have plans to update soon. When an update is released, you will be able to keep a backup before updating, so you won't be losing your work or you won't have to recreate anything from scratch.