Feminized and Female are not the same. Feminized means you have a better chance of getting a girl, but is not a guarantee by any means. If you bought the seeds from a reputable seed bank, send them pics of the males you got, most will do their best to set it right for you, if you handle them in a mature & adult manner.
The burning leaf could be one of many things, light to close, nutrient excess, nutrient deficiency, ph issues, ppm issues. You have to give a lot more info on your grow room set up, nutes w/schedule, etc to get a proper diagnosis.