Another user shared how you may be able to change the resolution over here:
https://f95zone.to/threads/true-facials-v0-58-pro-henrytaiwan.35192/post-18576938
The menu not showing up is definitely related to your 4k resolution as I've experienced the same issues and reported it, they will be fixing it. The camera issues you're seeing is a symptom of the same menu issue, because the menu is still actually there, you just can't see it. Due to that, when you hold a click in that area to move your camera, you're clicking on the menu and it doesn't take that input as you trying to move the camera, if that makes sense.
Also, I figured out today that this is also related to resolution, but it's not the same as the menu. The textbox/subtitles don't display at 1440p resolution, but they work at 1080p. TFG on the discord is also aware of this now so we should get a fix in the future.