EasyDiscuss Ranks Failing to Update

Hi, looks like the EasyDiscuss Ranks are failing to update on our site - was working at first then apparently stopped. U can see that in the attached screencaps that there are 3 users all with the same number of points, yet , but still show as "No Ranking".
I can provide temporary, front-end access to the site with "Registered User" privileges if it becomes absolutely necessary.

*Interestingly, the users that have their Rankings updated correctly are all Publishers/Administrator ACL levels, while those not are all "Registered User" ACL - not sure if that has anything to do with it as i couldn't find the Ranks tied to ACL anywhere

Cheers and thx!