Submission of Photos in Google Drive

With the experiment that make use of ODK for easier collection of student's quiz/test answers, we had tried to create forms where students can take a photo of their solutions, and submit it with their inputted answers.

Unfortunately when tried, only the first quiz receives the pictures, and the next quiz does not.

I understand that collect sends the photos in one google folder, but how do I reset/refresh the system, where it can receive photos from the next quizzes?

I am using XLSForm and the Offline XLS to XML converter, using enketo sometimes for testing.

The students are (instructed to) using android phones with ODK Collect app.