求一句英文翻译：（你好，我是一位在德国求学的一位中国学生，目前在LIZIO一所大学读书...）

Hello, I am an international student who come from China, and right now I am studying at a University of LIZIO in Germany. Actually, my student visa will be expired till the end of this month, the precise date is Sep. 30th. However, I cannot get the proof of registratioin for the coming semester from my shool. Based on this tough situation, what should I do to renew my student visa?

Hello, I am an Chinese student studying in a University of LIZIO in Germany. The expire date of my study permit is Sep. 30th. Now, I have registrated for the coming semester in my shool. Please tell me what can I do renew my study permit.