Short answer is yes you've done something wrong
You have three possible points of leakage...the o rings top and bottom or the square seal for the glass. One of those has moved.
The glass does tend to try and push the top piece of seal if you let it, especially when building for the first time. It's very important to make sure that the glass is fully up to the top also...it gives a bit of resistance that last little bit before popping into place.
In my view the square seal is most likely, but check your top and bottom O rings also
I hope you managed to get all the juice off.....it might be a good idea to take the plate off covering the chip/screen just to see if there is any in there.....good luck...i love mine