If you have any questions or concerns about what you've bought, take advantage of the five-day rescission period and rescind. You just have this one chance to do so. If, after learning more about the program, you decide buying from the developer is a good idea, you can always buy from them again. Somewhere on your paperwork there should be instructions as to how to rescind but they may be obcure or hidden. If you rescind, be sure to send your letter by certified mail so that you have a receipt from the post office showing you sent it in time. It may be
more complicated to send something to Mexico but search your documents for an address. However you send it, be sure you keep a copy of the letter signed by everyone who signed the contract along with your proof of mailing.