Thanks for the feedback! All 6 forms have a platforming ability: Elec has double jump, Bomb is immune to spikes, Jet can dash in 8 directions, Boomerang jumps high, Magnet can stick to walls and wall jump and Laser has infinite flight.
I just checked, finished the game once with each ability, just to be sure...
Other than that, maybe you died and lost the abilities... That is a bug, it's mentioned in the game page... I fixed it just after the jam locked entries :(