Why do you keep linking to that? I can't even find what official thing links there. The patch notes link you to the official game manual, which has the correct information.
I don't just feel or think the information I provided is pertienent, it is the correct information. I did not provide the link you have in your post above, I provided a different one which is correct. I also described the steps to become a mentor in my post and that information is correct. If you're going to continue to disregard it, then nobody here can help you, as the information I provided is correct.
The only possible explanation at this point is you're playing the wrong game and / or posting on the wrong forum.
The link that *I* posted takes you to a page that looks like this, which contains the correct steps for becoming a mentor in Final Fantasy XI.