Problems have since updated the plugins coursepress pro

When we update coursepress pro, we have these problems:

1. In Course Overview, Step 6 - Enrollment & Course Cost

We Cant add a cost or pay

Cost to participate in this course
This is a Paid Course (When we select this option, the system couldnt).

Plugin marketpress was activated and configurated it.

2. In Courses in Units, We cant add any elements, when we try to select one options, it doesnt work it