Hello again @supernova42
If you use TinyMCE Advanced, the WordPress editor will be completely overwritten by this plugin. For the code-snippet you posted you can try to change the priority:
Higher:
add_filter(‘asgarosforum_filter_editor_settings’, ‘my_editor_settings’, 1);
Lower:
add_filter(‘asgarosforum_filter_editor_settings’, ‘my_editor_settings’, 9999);
Maybe this allows you to overwrite the textmode-setting for TinyMCE Advanced.
If not, please try to contact the developers of that plugin and ask them if there is a possibility to only apply certain settings for certain WordPress User-Roles (subscribers in your case).