Our E-cas is stuck at "Application received" as well. However, when we emailed them we got back this reply:
"e-Cas is for applications processing within Canada only.
Immigration cases being processed in Visa offices outside Canada use a system different from that used to process similar applications in Canada. As a result, the e-Client Application Status (e-CAS) does not reflect the status of cases being processed in Buffalo.
Do not use the CIC e-Cas on-line change of address system. Your new address will not be downloaded to your file in Buffalo"
This is confusing since other Buffalo applicants see updates on their E-cas. Anyway, I stopped checking E-cas along time ago since it never changes...