In fact, the manual is available for 2024 users in its folder, and I now have it. The problem with that, of course, is that you only have access to it if you download the aircraft, and that’s not a requirement in 2024.
Like many in 2024, I only download aircraft once I’ve decided I might fly them regularly - and in my case, as I said above, if I’ve decided I’m not going to fly it again till it’s updated, and installing is a way of being notified when that happens.
That’s why, if you’re selling a new aircraft in the 2024 Marketplace, even if it’s a 2020 aircraft, getting checklists and tooltips complete and accurate first time is particularly important; however much it may seem to developers that, after the challenge of getting the aircraft right, these addenda are not worth an equivalent amount of effort. If your customers spend the first hour with the aircraft feeling their blood pressure build up, there may never be a second hour - or a second purchase.
And if you’re a developer, you really should have at least a cheap VR headset to check how that works - you may not fly in VR but a small but not negligible part of your customer base do.
There’s still no manual on the Flight Replicas’ website. In fact, of the six FR aircraft I own for MSFS - five de Havillands and a Grasshopper, of which only the Rapide did anything unfortunate to my blood pressure - only three rate mention anywhere there that I could find.
While I am considering your suggestion that I report my experience with the Rapide to Flight Replicas - without, of course, including the large lexicon of profanity I resorted to at the time - I do wonder whether, since you’re on first name terms with the developer, you might be willing to make a more sympathetic report of the difficulties I and others have encountered than I could manage.
I hope you enjoy the Rapide when you do pick it up; if you’ve seen the manual beforehand you’ll know where the starter buttons and fuel valves are located.
Edit: after I wrote this I got the urge to go and check the fuel valves again. It turns out that the tooltips for them appear in flatscreen but not in VR - though the valves are well enough marked in the aircraft that I really shouldn’t have missed them. My bad, though that’s what happens when you’ve just spent ten minutes looking for the engine starters.
Incidentally, while I was there I took a shot of the VR home position - I had to turn my head to look at the aircraft:

bkr (0003)
bkr (0004)
bkr (0008)
ZK-AEC(0001)