Edit: In retrospect, now that I reviewed the screenshot I posted, I see that they really did chance the house edge mid game when I was playing! I know this personally since I was trying to get their highest chances which was set at 97.05 when I started rolling! Oh come on, that's cheating right there. Without warning they changed it.
I understand completely how you feel there. I've been there too. But what they do is technically not cheating.
They said that they use variable house edge, and they have right to manipulate HE within the range they chose.
It is stupid, I know and questionable practice. But that is their rule. That is why it is better to find other Dice service with clear and more user friendly rules.
Variable house edge means it varies depending on the bet you place, it doesn't mean they can just change it while you are playing. When I started playing, I placed 0.0005
BTC bets which were 1% house edge. Now when I checked it, it changed to about 1.2% HE. Which the owner has already admitted to me via chat. That is WRONG. I don't see anything right about it. As a user/gambler, we have the right to be informed of this. Since this really affects the game. I would not have played anymore if I knew the HE will go up!