Yusuf

I managed to fix it by replacing

s2_tools with s2_toolsXXX

in

subscribers.php (1 occurrence)
class-s2-admin.php (2 occurrences)

Not sure why the fix works. s2_tools is just a string tag that gets passed around in the URL. Unclear what is interfering with s2_tools but not s2_toolsXXX

Would appreciate if anybody has any insight into this.

Thanks