So just so I'm understanding correctly, you're advising people to switch server hosts to get the mod working? I don't know about the situation of the two people you're quoting specifically, but I myself can't upload CUP to the server without it taking 3 days. And our server has donations on it, with no other provider being in the price range for what we are getting, not to mention that the server runs without issue. On top of that, I don't think I'd be wrong in assuming that loading 7.7GB or so up from the 1.9GB of AiATPLite would most likely have an adverse effect on server startup times.
Consequently, I have to ask, are there any plans with the CUP team to create a "Lite" or "server optimized" version of CUP Terrains to make it easier for server administrators and groups to use it?