No, seriously, it doesn't say anything about renewal or endings (at least the snippet posted -- whether or not that's the whole thing I won't debate).
The six months is how long he has to wait before qualifying where he can choose his option.
And, the quick google I did says it's supposed to be lifetime.
That said, the links I found don't work (whether they're expired or the program is over or what, I don't know).
He would have to contact a Monthly4G specialist at 611 and talk with them as to why his promo did not get applied.