I've seen several posts about this, and apparently you really only have three. I *think* if you look on a computer vs smart phone it will show correctly.
There was also a recent glitch where the times showed an hour off on smart devices.
I also have 4 scheduled on my Epcot Day. I am thinking it's a mistake but it is showing my computer as well as my smart phone. I think the computer assigned me Spaceship Earth for 9:30-10:30 and I wanted it later so I changed it for later in the afternoon. Well both times are coming up for Spaceship Earth and well as the other two attractions I picked. I have no idea what's going on with this.
I had 4 on our Epcot day, I ended up only using 3, we ended up opting for an afternoon in our room and I didn't use the 4th. Not sure if it would have let me. It was on MDE app and on the website when I checked.