Exact same thing happened with me. Had the 4$/mo (I think) plan to support them, despite doing nothing on their platform beyond free tier, and when it became cl

Exact same thing happened with me. Had the 4$/mo (I think) plan to support them, despite doing nothing on their platform beyond free tier, and when it became clear that would become > 20$/mo in future I cancelled it and left a message explaining why. Apparently they felt the three year ramp up was more than generous.