毕业后专业变成了STEM

我是21年12月毕业的，12月到现在在拿OPT实习中
22年7月得知我们专业变成STEM了
不知道我能够renew OPT i-20 并且拿这个申请签证嘛，有小伙伴有经验吗？
我的学校International Office argue，他们让我找department ad，ad又说她不知道，还来了一句

Unfortunately, the STEM designation is retroactive—I won’t be able to help you with this.
Retroactive means that you have already graduated, so the STEM designation can no longer be applied to your program of study as it has been closed.
Maybe OIS could help? They would know if other students have been in the same position.

应该不可以 你都毕业了啊…