I started this topic over in the MSFS support forums but when I requested a refund because I was getting nowhere, Asobo suddenly decided it's your problem. I believe it's their problem but hey-ho. May I ask you to view this topic please as it contains a screenshot and (lazy me) saves me from writing it all again:
https://forums.flightsimulator.com/t/an-225-does-not-show-up-in-the-hanger/598741/7
There are no other addons in my sim. This was the very first one that I bought and and, as you can imagine, I've been very reluctant to buy any others since.
Thank you.