Download a fresh copy of installer file form here: Download All | SketchUp | SketchUp, and right click on that installer file, select Run as administrator. When prompted select Repair.
No idea. (Perhaps same as 1)
The printing is changed at 2023.1 (See release notesPrint Updates section) nothing you can do against, but use Layout…
No. You have to live with the icons that “look like washed jeans”, trendy but ugly
Just upgraded to the 24.0.594 version. I went into Help - Check for updates and ran the update through SU (as I usually do) and so far I am not seeing these issues. All toolbars are right where I left them and texture opacity slider is working. I am using the new graphic engine and running SU on a RTX 3080 card. Must be something with your system or setup. I hope you get it sorted.