Sometimes, you may want to restrict access to certain articles—setting a password is a great solution.
Using this plugin, visitors must enter the correct password to be able to view the content on your site. If you do not want to protect the entire content, you can also set up areas that you want to restrict viewing (e.g. download links ...).
* This plugin is compatible with Joomla 3 to 6 + All versions of SP Page Buider.
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Install the plugin via the Joomla installer. Next, go to the plugin management section, find the plugin "System - Password for SP Page Buider" to start.

Next, add the pages you want to password protect. Under "Zone", you can choose "Page" if you want to protect all content or "Element" if you want to protect a part of the content.
ID is the "id" of the SP Page Builder item. You can find it in the SP Page Builder item list section.
Finally, set other basic parameters and remember to “Enable” this plugin to finish.
What is wrong?
That imported page keeps on saying this, but nothing further is happening...
1. The "radio buttons" extra field doesn't transfer the values in the additional field, e.g., "yes" or "no," and only enters certain values into the #__fields_values database.
2. The "textarea" extra field with the "Use editor" option checked converts to "textarea" when it should be "editor."
3. In K2, the extra field group is assigned in the category. In Joomla Articles, the category is assigned in the extra field. It would be nice if this were automatically completed. A checkbox could be added if someone doesn't want this option.