e-Learning Webboard

I've downloaded 14215-1 and 14215-2 which is .pdf file but it pop up asked for proper password to print out.
Please advise.

The files are meant to be stored and read electronically. However, if you have not received the course textbook/manual and wish to print these out to study in the mean time, please contact E-Learning 02-5047417-9 or LINE
@byp5261c.

Dear Sir,
I didn't get any textbook or other equipment for this course and the STOU staff will help me finds where it was.

I hope you can get it soon.