It does not show up on buddypress sections like activity, groups, forums etc. When you like/unlike wordpress default posts, then that like/unlike activity is shown on buddypress activity section.
Please share a screenshot of our plugin configuration settings page. In case of some themes which do not use wordpress filters properly, the like/unlike buttons will not load automatically as this is dependent on those filters. The theme you are using is a paid one so please send that as well.