ACS requirements questions

Hi! I'm currently preparing my requirements for ACS. I have a few questions

1. Required ba ang proof of payment wven though may reference letter na?

2. Some of the reference letters di nasunod yung format ni ACS. I provided a draft naman to follow. however, system generated daw kasi so they can't change some things.

kinakabahan kasi ako baka di ako i-assess due format discrepancies. Thanks in advance!