Check boxes are working but need "complete" button to pop up after finishing check box

I have some thoughts that may help you. First, you should know that I speak from a learner-centric viewpoint. That means that one of the most important considerations for navigation is to give the learner maximum freedom in choosing their path, when practical. Obviously for concepts that build on each other, you need to predetermine the order. It also means that the testing phase has to include every possible mistake the learner can perform, no matter how unlikely it seems.

I see two main reasons your project won't work.

The use of Selected and Visited states in this manner is almost always guaranteed to cause problems:

Selected is a built-in state, and as such has built-in triggers to cause it to function.  It's function is to change to Selected if it is clicked, and to change back to Normal when it is clicked again. It should not be used as a state for visibility, For one thing, if the learner clicks it (and who knows why they would, but they will), it will leave the Selected state. What you need to do is to duplicate the Selected state, and name it something else, like Active. Or, you can use the hidden state initially, and change it to Normal when you want it visible, like in the sample.  For the same reason, you should probably use Complete state instead of Visited. They can look the same, but the name and the built-in functions of those names can be problematic.

These triggers from slide 1.8 are the problem Perry warned you about:

Once a jump trigger is initiated, no other trigger on the slide is executed, so the Misrepresentation variable is never changed to True. Change the order of them so the variable is changed first, then the jump.

Then on slide 1.6, I added a trigger to set the button that advances to visible when the timeline starts, if all the variables are true. This is why Perry recommended variables. They are a lot more reliable than states, especially the "when objects are state ..." condition.

The concept is that after a learner finishes a concept, its variable is changed to True, and the learner is returned to the menu. On return to the menu, they see the method of advancing, only if all topics have been visited, as evidenced by all their variables being true.

Those changes (and the corresponding changes on slide 1.2) will probably make the project work. The rest of this is design philosophy that may help whoever reads it, but you can safely ignore it,

The button to advance from Menu slide slide1.6 (by the way, I strongly favor this type of menu as opposed to the built-in "Try to guess where you should go from the names of the slides" Menu) has the text "Complete" This at best is a verb telling them the will finish the slide if they click it, and at worst is designing for the designer. Designing for the learner is to tell them what will happen if they click. I prefer "Continue". That's why the new trigger on slide 1.6 references "Continue" rather than "Complete"

It is so much easier to troubleshoot a project (and return later and maintain it) if things are done consistently. If things are presented to the learner consistently, it also lessens the cognitive dissonance and extra load  of trying to keep track of what is happening, and how to make it happen next.

For slide 1.7 - 1.9, there are two different methods of setting the variable to True.  In my opinion, both of those methods have problems, aside from the inconsistency. One sets the variable when the timeline starts. That means the learner can navigate away from the slide before seeing the content, yet get credit for completing it. The other is to set the variable and jump to the menu when the video completes. May I suggest another approach? On the last layer show an object for the learner to click when they determine that they are through with that slide and are ready to Return to the (in this case) submenu. Maybe "Menu", or "Return" would be a good name for it. When they click that, set the variable, then jump to slide 1.6. That gives them time to assimilate the content, and move at their own pace. It also provides a consistent manner of navigating.