If you make five posts on any thread(s), the forum will automatically (within about 20 minutes) switch on your ability to use the Private Messaging service. Then I shall be able to send you the lists that another applicant used for EWRB, to use for an example for your own application.
If EWRB need a letter from the body that gave you that qualification, you need to try your best to get such a letter. Yes, it is likely that they will not believe you about that course without proof. Surely these days, the college or whatever it was must have a website where you could contact them?