peepsoajax error won’t save profile edit

I posted this on the community can’t find the best way to seek for this error problem on my peepso installation.

https://www.peepso.com/community/?status/5328-5328-1476450375/

when I edit my profile then save it doesn’t work.

when I check the console it says error 403 for the peepsoajax I can’t find the file to edit the permission.

any fix on this?