Your picture clearly shows you have all the checkbox that enable the tweaks fully visible. Of course, in P3D V4, the "Force HD textures" is always disabled, since the 4K resolution can be easily set from the sim.
It's a setting that was only required for FSX, which doesn't allow you to go up to 4K and it lost the setting if you entered in the setting page, so the Addon Manager tweak prevented that but, it's not needed anymore in P3D.
Of course, with CYVR, it's not enough to just set the texture resolution, you must also choose the proper resolution when installing. Again, this was only really required with FSX, to save memory but, in P3D V4, you can safely install the highest possible resolution textures, with no fear consuming all memory.
We'll check why you have issues with the season switching, it's possible it might not fully work in P3D4, yet.