Are you attempting to connect in bright sunight?that could be the problem..if not try calling the place you bought your tama from and ask for assistance...they may havta give you a new one...
Here are some ways that can interfere with the Connection.
If a problem arises..
The units may be too far apart. Keep close together (7 or 8 inches or less).
Don't use a TV remote in the path of them. It's infrared can cause a failure.
Keep out of direct sunlight, connect inside a building.
Clean off the port at the top, any cloth will work.
Only one of you press the button to initiate.
How connecting works.
This is very simple. After you press B on one of the units on the connection screen, that unit is the benefitter (unless something goes wrong.. see above).
Failure results.
Tamagotchi may initiate in playing a loosing game with itself.
(When compatable) Tamagotchi may initiate mating process and end up with a baby (but the other unit doesn't).
Tamagotchi may put up it's away sign and visit the great beyond and then come back.