To be able to see the valid statistics of your bbPress forum board, you have to recalculate the relationships between forums, topics, replies, topic tags and users as it’s shown below:

  1. Go to the WordPress admin panel;
  2. FInd on the menu tab “Tools” and sub-tab “Forum“;
  3. Tick the relationships to repair as shown in the picture;
  4. Press the “Repair Items” button