I was trying to integrate the newsletterplugin.com plugin into my website but parts of the plugin became unable to view. I deactivated all my plugins and reactivated them one-by-one. It led to the plugin I created for my settings page using Metabox.
I then troubleshot every line of code in the plugin until I narrowed it down to the "mb_settings_pages" id that creates the settings page
Is there any way to change that ID so it doesn't conflict with the other plugin? I tried changing it to mb_settings_pages2 (which solved the problem with the newsletter problem) but still killed my metabox settings.
Yes, you have to use the filter hook mb_settings_pages to register a settings page. If the settings page works properly before activating the plugin newsletter, please contact this plugin support to ask for help with this case.