I suddenly cannot use shift or control in order to select multiple layer nor can i use shift in order to rotate my canvas in a way that snaps to the nearest straight angle.

Shift and control still allow me to save(ctrl+shift+s) or select my entire screen(ctrl+a) but its just layers and rotating to my current knowledge. I have already restarted my computer, redownloaded photoshop, and its an issue both with stylus and trackpad.