PeepSo Activity Bump is used to bump activity when anyone likes or comments on an activity.
This plugin Bumps the old activities on the top of the page when community members Like Comment, reply, or react to an activity.
Site admins can also set the reaction count, which means activity will bump only when that selection count is reached. For example: if the selection count is set to 4, Activity will bump only when 4 members react to any of the activity.