Hey,
So, I do not have my UCI either. I became PR a long time ago (2000).
Some GOOD NEWS though. I can finally see eCAS as Application received using the "temporary application number"(Minus the X in front of it) and my fathers DOB.
Just FYI, I could not check eCAS with the receipt number. I do not believe the receipt number is a valid way to check eCAS.
@YULIA-2016 can you update tracker for me to say eCAS is showing today as application received. (I am a May 17th applicant)