Hello,
I would suggest you to delete the Enteries from the SEPM. In the next heartbeat interval, these enteries would re-appear in the SEPM and the reports and SEPM would be updated.
Secondly, could you check if there is another Domain created (if any) with SEPM. This could be checked by -
SEPM >> Admin >> Domains.
By default, you need to have only 1 domain.
If incase you see 2 domains, try Administering the second domain and check under Clients TAB if you see the clients?
Hope that helps!!