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我的订阅要到期了，下一个订阅周期我想从 Level.3 降级到 Level.2，我需要等现在的订阅到期吗，还是临期续费即可？ 而如果要后续升级是否同理？
好吧，目前就不支持降级续费这种操作。
先取消过期后再续.