It looks like you are candling from the bottom. I use to do the same thing but if you candle from the top (a little tricky, you may want to ask for help until you get the hang of it), you will see better. You will have a clear view of the air cells and you will see the veins better.
As for the humidity reader that you bought with the temp... did you by chance check the temp for accuracy prior to using? If it is accurate then your humidity is good. If the temp is right, then it is way too high. I would take it out and try to check it against a know thermometer. (That's the hard part... knowing what is right.)
Okay now your pictures. The first does look like something started to develop but it's hard to see the veins, I think I see the air cell at the top and that looks ok to me. The second one is dark which if you could candle from the top you may have something in there, it's hard to tell. The next one looks like it may be a blood spot, followed by 2 clears. The last one again looks like there was/is something there but looks too clear in the bottom. Since you are looking at them in person, do you see veins? The slight movement you see when you move the egg does not necessarily mean that the chick is moving... that could be you moving it with the egg.
So here's what I would do. First I would try to check my new thermometer/hygrometer. The temp is the most important. If that is really right then unfortunately I don't think that that is good news for your eggs. As for the humidity, I take my readings with a grain of salt - I use the reading as a starting point but really go more by the size of my air cells on whether I need to increase/decrease humidity. Second at this point if you are in any way unsure of what you are seeing, just continue with your incubation. You will learn from this trial and will be able to make adjustments for the next go. I would suggest keeping a log or everything that happens. It has helped me a lot when I had questions with current hatches. And lastly, once this round is over, open your eggs. You will be able to determine for sure if they were clear, if something started to develop, and how far along they were. It can help you to determine at what point there was an issue.
Good luck.
