I read about half of the first page, and think:
oh, THIS is the thread with that story I read about in the other thread. Now I understand why everyone is having trouble with this guy.
1. Language barrier.
OP, I think you meant to say "not all camgirls can squirt" instead of "all camgirls cannot squirt". Especially because you believed the one chick who said she can, so I see that you recognize some can, and some can't. I suggest putting in your signature "please excuse my English, it's not my first language."
2. Misconception.
Just because someone can't do something at that time, doesn't mean they can never do it. Sometimes, I'm perfectly capable of doing 15 pushups. Sometimes, I can barely do 3. I don't squirt, but I imagine being able to do it is kinda like being able to cum. Some girls have to have exact mood settings and such, and can't do it if they're the least bit stressed. Some girls will be able to do it no matter what as long as they follow the proper procedures. It sounds like she's the former.
I'm going to make a guess at what happened to you. Girl finds out that she can squirt if she does thus-and-so. She tries it a few different times under different circumstances, and it always works, but she was never under stress before that. Girl advertises that she can do it, and you take her skype for it. Girl decides to try to finish her shift before doing the show, not figuring she might be stressed about the show, and thus not do as well that shift, making the skype show even more of a stress (I've done this before). Girl tries what worked before, and nothing happens. Girl is mystified and embarassed, and gets out of the situation asap.
I'm going to make a suggestion. When you've paid for something, and the girl couldn't follow through despite obvious trials, if you don't feel satisfied try to work something out. In this case, if I were that model, I probably would've offered a video of me squirting when I finally make it work again. However, I wouldn't be happy with a customer who came in demanding a compensatory video. I would prefer someone approach it delicately. This can be problematic if she's an English speaker, so here's what I would say if I were in your place:
"I understand that you were under a lot of pressure for the skype show. I was really hoping to see you squirt for my money, is there any way we can make this happen?" She might offer another show, she might offer a video, she might offer pictures. Hopefully she offers something. But, she might not offer anything. She might say that she really can't give you anything for that money. If so, there's nothing you can really do about that.