Peepso replaces my news page

Hi.
Your Peepso wordpress plugin is just what I’ve been looking for – looks great and seems to have everything I need. However, as soon as I installed I hit a snag.
As soon as it is activated it replaces my posts page with another called sitewide activity!
I’m really confused and would appreciate some help[ with this.
Here are some screenshots…
Before installing Peppsco: https://prntscr.com/d2nd87
After installing Peepso: https://prntscr.com/d2nc9j
As soon as Peepso is deactivated, everything reverts to normal. https://prntscr.com/d2nd87
Has this happenned to anyone else?
Wordpress 4.6.1
X Theme
Buddypress uninstalled to be replaced with Peepso.
I hope someone can help.
Many thanks
Dan