How do I delete a program so I can add a new one it only allows me to have 5
It's a little complicated.
In the android app, make sure you're on the "Programs" tab (from the menu at the bottom of the screen).
Tap the program you want to leave.
In the upper right corner, you'll see an icon that's three dots in a line (indicating a menu). Tap it and then choose "Program settings". At the bottom of the next screen you should see the option to "Leave Program."