My I-601 waiver was approved by USCIS April 26, 2022 for my immigrant visa case.  I noticed that my CEAC date of last update  has not been updated,  suggesting they did not get the waiver approval notice.  I was waiting for instructions from the embassy after the approval but did not hear from them.   So  I emailed the Montreal consulate and after two weeks they responded that they did not yet receive the approved waiver and will not proceed without it.  What am I supposed to do ?  I scanned and emailed the approval notice to them (I-797 from USCIS) in reply to their email.  Normally the consulate is supposed to be notified directly by USCIS upon approval.  Has this happened to anybody?  How do I get this resolved ? Please help!