I am one of the first to agree that Emirates (and Skywards) websites are full of errors so things can and will go wrong, but doesn't anyone check what miles are to be awarded (including Accelerator Miles) in MMB when the booking is made, or at least at some point prior to travelling?

OP. I just noticed you did look in MMB so ignore the above. If you did Opt In and get confirmation there will be a copy under "Alerts" in your Skywards account, providing it was one of the last 5 messages they sent you excluding those on service/technical issues.