This app provides the improved about me block that has correct background and layout parameters and can appear on user profiles as well as in other places of your network (using Blocks menu in AdminCP).
Block displays custom pictures that can be set in app's admin – this is useful for showing the block with specific pictures only to a certain user group (such as organization or another kind of custom profile).
Question 1: it doesn't work
Please make sure that when editing custom field (about me) you have selected all user groups you want this custom field to appear for in AdminCP > Members > Custom Fields. Also please make sure that user groups are correct in Apps > Advanced About Me Block > User Group Settings.
Question 2: where can user edit the value of custom field?
In Edit Profile (yoursite.com/user/profile) > About me (or the custom name of the about me field chosen by you)
Question 3: How can I enable the block for certain user group?
1) Go to the Members > Manage User Groups, then next to user group of your choice click on gear icon and then Manage User Group; 2) In the Apps dropdown menu choose module_advancedaboutmeblock and there will be the only on/off setting to enable or disable displaying the block for this user group.