I can't grab the sides of the door because it is under the kitchen counter with not room on the sides or top.
Then you need to get a flat bar like a crows foot tool to get it and pop the door open. If you have no room at all this is what I do all the time.
Do you mean a crow bar? And would I do it on the top or the sides? Isn't this going to wreck the door?
A flat bar...like a crow bar but the vary flat ones. if you have 2 you can just do both sides and pop the door open and you will not ruin anything. Also you should be able to pull hard enough just on the handle alone to pop it open.
Also, we tried to open the latch with hard pulls and it would not open.