they can't say their wife was a hooker met at the bar so they'll make up the story that they met here while she was on vacation/visiting a friend or a relative. I heard this story hundreds of times....
that's what the greatest majority of farangs do but only 1% of them will admit they found their wife at the bar, the other 99% will say they found the wife in a remote village or while she was on "vacation"... lol
as the other folks said, you MUST attend your class in person in order to get a ED visa. Then you know, this is thailand and money can buy a lot of things but then don't complain if things go wrong, you got warned