The explanation is simple - OFT does not hold any approval, in its own right, to conduct JAA courses. It is clear from Standards Document 31 that it is Cabair, trading as EPTA, which sub-contracts OFT to provide aircraft, instructors and other facilities to conduct approved flight and theoretical knowledge training. Anyone who is training at Kissimmee is, therefore, actually a student of Cabair, not OFT.
It is difficult to see this advertising as anything other than a deliberate ploy to confuse potential customers as part of a cynical attempt to extract money under false pretences - what any reasonable person might call theft!
Misleading advertising such as this is not unknown, of course. Notably, Delta Connection Academy claimed, falsely, to be JAA approved when it was, in fact, no more than a sub-contractor, providing resources to Atlantic Flight Training. As a result of this deception, a number of students were conned out of out of a great deal of money. It would seem sensible to avoid dealing with any organisation that indulged in such deceitful practices.