I installed the MainWP Dashboard Plugin to try it out. Now I want to delete it again but there is no Plugin-section left in the menue of my normal WP-Dashboard.
And I can’t delete the Plugin via the MainWP Dashboard itself.
MainWP by itself should not be hiding the Plugins section of your WP Admin area.
Did you perhaps add the Dashboard site as a child to itself, and used the White Label to hide the Plugins section?
And you always have an option of deleting the mainwp folder in the /wp-content/plugins/ directory. Either by using FTP or a File Manager app in your hosting backend.
Are you able to directly access the Plugins URL for that WordPress site? your-site.com/wp-admin/plugins.php
And do you have any other administrator accounts for that WP site that you can try?
Lastly, there’s always the option of deleting the mainwp folder in the /wp-content/plugins/ directory. Either by using FTP or a File Manager app in your hosting backend.
Just to reiterate, MainWP does not hide the Plugins page in the WP Admin, and there’s no out-of-the-box option for it in any of our extensions.