You don't  need to receive updates from RM. You need to accept a photo of a valid proof of posting from your seller on ebay for business on facebook. I keep all my proof of postings (have 2 yrs worth in a box) as i might need them to make aclaim with RM for loss or damage etc... 
Everytime we are on chat with ebay reps they love to tell us how highly valued we are as a long standing seller on the platform, so maybe as we are so highly valued you could accept the evidence we provide you as the truth.
In what universe would it be good business practice for my to post my items late or let down my customers?

 Proof = evidence or argument establishing a fact or the truth of a statement.