Not working at all

Hi,

Can you tell me how this works? Installed, activated on BP 1.9 & Buddyboss 3.1.5 but it seems to do nothing? Hashtag text is treated exactly as any other text?

Thanks,
Paul.

https://wordpress.org/plugins/hashbuddy/