Comment 1
Most students read the course description line and skipped the rest of the letter.

Comment 2
What is a 'res expiry date'?

Comment 3
Payment is compulsory but sounds optional.

Comment 4
Warning about importance of expiry date is not clear.

Comment 5
Blocks of text are difficult to read.

Comment 6
Paragraph mixes offers of help with warning messages.

Comment 7
Nothing at the end to tell the student to carry on reading, many missed the contents list on the back of the page.