Hi Yenky,
Sorry to revive this, but just joined and not sure I follow.
We like OP have CME, I have my main site, and (so far) a customer site setup via distributed monitoring
All good there…
Then when going back to the main Overview or in the Customer dashboard, all we see is the default “provider”.
I had assumed reading all the marketing fluff around CME that we would be able to see not only the main site ( as provider that is fine ) but also a break down by customer, especially since we had setup them up.
Otherwise the functionality of CME and customers is rather limited.
Also as feedback ( in case folks at Tribe are listening ) you REALLY need to update docs and info around CME, but I assume that is behind the 2.0 doc update, which looks like it will still not be done by the time 3.0 is announced next week 
Thanks,
Sean.