I purchased the unlimited sitemap version 2 daya ago and installed it as per instructions, it will not create the sitemap fullstop.
Asked a friend of mine who also uses it to have a look and he does not know why it aint working either.
Asked my host to have a look at the configuration and they reckon its setup correctly but more than likely a bug in your code.
I would appreciate if you could PM me so I can give you the url and login so you can look for yourself.
I dont mind paying more if this can be made work.