You're supposed to shift your weight as you move the material through the machine. Press the back of the board when you go into the blade, and shift the weight to the front of the board after the blade is past the center of the material. This way you'll be referencing off of the outfeed table as the board exits the blade and it won't be able to tilt back into the infeed table.
Woodsy Had same problem, your video helped but the problem remains The blade cannot be set accurately because of the springs My solution is not pretty but makes setting them easier and repeatable. The alignment tool is either too much or to little depending on how much you press Large block of wood across the alignment tool, pencil lines on the fence gets an ability to gradually press, no pretty but works It took days to arrive at this solution
I’ve been looking at the Charnwood PT200 which looks like it comes with the same knife setting jig as your Einhell. The owner’s manual is on the Charnwood website and on p.12 of the manual there’s a colour photo and some instructions about how to use the setting jig (on the out-feed table). Just mentioning this in case it might help with adjusting your Einhell.