Questions about example sentences with, and the definition and usage of "Refered"

A: Not correct.

I referred to my lecturers and she wanted me to add more questions to my questionnaire.

A: × ‎I refered article’s PDF information, I modified 33 articles’s data on the A’s server because most of the current metadata are not correct.
✓ ‎I referred information from the article’s PDF. I modified 33 articles' data on the A server because most of the current metadata are incorrect.

× There are some reasons, but I think main reason is the old system occurred error when we need to change the data, as you mentioned me.
✓ Since you asked me, I think that there are several reasons, but the main reason is probably the error that occurred when we needed to change the data.