I can't find my up-coming flights on MH on their website. I'm trying my six digit booking reference, and also my five digit 'Confirmation Number' that's on checkmytrip.com. The website is saying the booking doesn't exist under either of those references (and not, for example, that I can't view them and/or there's some other issue with viewing online).

I did a quick search on here and can see there's a known issue - the trip was booked using Avios on ba.com. However, when it comes to checking in, can I still do that online at T-48 hours, and if so, is the Confirmation Number the reference to use, or should I use something else?

Or do I have to go old-skool and actually check in at the airport