Hi dear,
It is very normal to see a stagnant status in your cic account with regards to eligibility as under reviewing stage even after you get your golden email . Since the status shows that background check is in process, it basically means the following
R10 ( document completeness has been passed),
Medicals passed,
eligibility may be in progress or would be recommended pass ( the latter is most likely however the only way to confirm this is by ordering gcsm notes)
background check and security check in progress..
All goes well, you should be hearing yourself to read the golden email next.. cheers!!