LB 10 days or so ago changed the Load balancers that are associated with the above management interface.
This has created some instances where resellers were unable to get to our CP, yet could get to for instance the ResellerClub CP.
Today (NOW) LB are reverting us to the old balancers which should put us back at the same position before the change that happened 2 weeks ago.
Estimated downtime : 30 mins
This is now complete and working as of 1741GMT