You're still having numerous issues that the solutions to have already been mentioned. Perhaps you're doing changes, but you're not doing them on a big enough scale? I think you really need to absorb the advice given to you, and apply it as best as you can. Over do it, even; show us that you're taking this in and understanding it. Anyways, among the issues, most prominent are shading and perspective. Colors aren't the greatest either.
Your back leg needs some work. I made this edit to demonstrate some issues bothering me about it, namely, the back joint, as Sokota mentioned isn't in the correct perspective. Don't know if it should be visible or not, but it shouldn't be intersecting the legs at the axis they rotate. Right now all 3 joints are facing us.
Your shading could use some work, too. In the most recent example, the bottom section of the back leg was lit/shaded similarly to the top portion. This makes it seem as if both sections are not connected, and like the example in my edit with the red X on it, to me. Your light sources over the entire image are confused. I shaded the edit with the light coming from above because I wasn't sure. Half of your robot make it appear as if the light is coming from the top left, but due to mirroring, it also seems as if it is coming from the right in some parts, and straight above in other parts. (I don't think the 'edge' highlight on the sphere works, btw. Spheres don't have edges.) And I just realized that the sections for the arms and legs are round, not square, unlike how I shaded them in the edit. Sorry for that. (Maybe making them -your entire robot- edgy would be a better choice, though?) Don't forget about cast shadows, either. I don't think there'd be so much light hitting directly underneath the main section of the bot, on the legs.
I know you've been told a million different times that your colors need de-saturating. And I know you're going for a look that is much less than realistic, however, saturated colors do not a cartoon make. Don't be afraid to drop that saturation way, way lower. I would also personally, never use pure grays, they're dull and boring, but Ryumaru already covers this so I'll leave you alone on it. You should read up on some color theory to find out how to achieve the best results. You could even implement those greens into what would likely be a blue-gray tinted robot. Just experiment with it, don't be afraid to step outside of your comfort zone.
As for the robot design, I think you'd fare off much better cleaning up your lines and jaggies, and try to go for a more symmetrical, even look. Much like with what Ryumaru pointed out with the oval joints.
I also dulled the tips of the legs so the bot would appear more stable.
The last portion of my edit was just me screwing around, but looking at it now, I think I can raise a good point with it. You need some details. Currently, you have this flat shaded, incredibly plain and basic looking robot (no offense). You can keep the same design, but I think it would make it look 10x more interesting if you threw in some little technical details. Mechanical parts and whatnot.
And I just want to say, I don't think you're pissing anyone off, and even if you are, so what? As long as you are courteous and respectful of the advice given to you, even if you don't agree with it, and respond that way, and show us that you're trying to improve rather than wasting our time, then all should be well. This is all about you, not anyone else. Don't let others get in the way of your improvement.
Keep up the good work. You've improved a lot since you first showed up here. And again, don't be afraid to step outside of your comfort zone.
