I have bee checking for months now. I believe they mean, if when you insert your finger goes along way before you hit your cervix that is high. Like you almost can't reach it with your finger tip. If you reach it with just a little of your finger inserted then this is low. Some womens cervix tilt differently, I think this is what you were describing. Check at the same time everyday. because your cervix changes through out the day. It should be low and harder around your period and should start to rise and then reach the highest and the softest when you are right around ovulation.Good luck. And make sure you wash your hand really well before you check.
If I were you I would check around ovulation time and then after to see if there is a change you will get to know your body yourself everyone is a little different. I was the same but this helped me.
I'm lost on this as well. I don't even know where to begin checking. I don't know, where I'm looking (specifically) and what I'm even supposed to be feeling for, lol. I haven't tried this approach yet because I'm confused as anything.