Hi @Ananda_Aikoo_Mutiara_K - sorry for any confusion. First, I want to clarify that subscriptions are on the team level, and not the account level.
When you say you’re back on the free plan, it sounds like the team you were working in is no longer upgraded to a Education plan. I don’t have the ability to evaluate and provide you more details on your specific instance, but our support team can help give you more insight.
Please fill out this help form when you have a chance, and let me know when you’ve done so.