Anytime! Had a hard time dealing with playing Song of Horror in 16:9 so that's what inspired me to figure out how to get it working and share it here. :3
That would suggest the issue stems from modifications made to the file by you though, not the trainer. It makes no changes to the game files and restores the original code in the memory when you press F8 again. For some display modes or other variables, it may also require pressing alt+enter twice to have the game read from its original code again.
Look up reverse engineering software on YouTube to get started 😁 Contrary to the popular belief, it usually takes many hours of disassembling, and few games are properly fixed by searching for the well-known aspect ratio or Unreal Engine 4 FOV-related bytes. If they are, the solutions are usually available on day one because every advanced ultrawide user knows them by now.
From the developer standpoint, it's easier than it is from mine because they already have all their functions defined and documented as classes and such, while to me every game is a black box with many lines of pure assembly code to dig through. String references can be of value in 1% of the cases but the rest is discovery, trial and error.
I actually think the community can be too harsh on the developers, because although on their end enabling ultrawide may be as simple as two checkboxes and a number of FOV values to convert from horizontal to vertical, expanding the field of view means there is a lot more space to fill with assets, as previously explained by me here. Shooting a film, two constructed walls in a warehouse can be enough to create the illusion of being inside a house with four walls and a roof. Imagine expanding the field of view to the point of the warehouse being visible and zooming out for the viewer to see the construction. It's usually not as bad in games but even a small out-of-place item or a pop-in can be seen as a significant problem capable of ruining the immersion and causing outrage. As ultrawide users, we are used to those and we can tolerate them and often forgive them when using an unofficial mod. Moreover, as a modder I have no responsibility if something goes horribly wrong, as my livelihood does not depend on it.
With that said, I think it's fine to put some pressure on developers and show them that there is a demand for wider resolutions. No posts about it would never push them to improve or care, and there are quite a few cases of developers - like those of Terminator: Resistance or Disco Elysium - listening and shipping ultrawide support in post-release updates.