PMDG 737ngx crash issue for FSX:SE

Hello everyone!

A few months ago I downloaded the PMDG 737ngx for FSX from the Internet Archive (https://archive.org/details/pmdg-737ngx), and the aircraft seems to have donwloaded without any problems, I can even see it in the main menu. But when I try to load it in game, the game just crashes. Depending on the variant (there are several) the game either crashes while loading or right after spawning, all the times with a distinctive "click" sound (like the one you hear when you click on a switch). 

After some digging I found out that by eliminating the PMDG_737NGX.dll (located in the Gauges folder), the plane spawns just fine, but obviously the screens and everything don't work.
The PMDG MD-11 and PMDG 747-400X work just fine. 

I'm running FSX:SE on Windows 11, I have downloaded all VC++ 32-bit (x86) packages, legacy SimConnect is also downloaded. Any ideas on what to do? Or is the addon just too old or just too corrupted on its own? 

Thanks