Remove
Pinch the base of the cup to break the seal and then slowly ease the cup down and out. This should not be uncomfortable. If you experience discomfort make sure you have properly squeezed the bottom to break the seal of the cup. Do not just pull the stem - it is essential the seal is broken first.
If you come to remove your bettercup and it has moved up out of reach then insert your index finger alongside the cup to break the seal that way, then ease the cup down and pinch the base and remove once its in reach.