Can you post a screenshot of where you are in the level?

Also remember to look at "Remaining" and make sure you haven't prematurely grayed out any clues.

Nevermind, I just did the puzzle again and got to the point you're talking about.

Make sure you didn't prematurely gray out a diagonal. Perhaps a 4 diagonal.

That was it! Thank you so much! I'm glad guide was wrong. I would hate if it couldn't be figured out.

There is never any point where you don't know enough to make at least one more move. The guide was probably talking about how the levels are handcrafted to dispense clues in a particular order as you uncover them, or use geometry to force you along certain lines. There's usually a certain flow to how the map unfolds, but clues don't vanish out from under you or anything. When you have multiple angles of attack you can (and should) work out whatever you can wherever you can. A lot of the time, the last few bits are only possible once enough clues from elsewhere converge.

Well try to copy the little piece of puzzles on paper, and think about the question. Sometimes you will find only one way to solve it although there are still much of blanks, dude.

Let's put it this way: the only way to do anything "out of order" is if you botched the logic somewhere, clicked a cell you didn't actually have any way of solving for yet, and accidentally got it right. And even then, the previous logic paths will still exist -- the new data doesn't impede you at all.