From the model number 139.53879, you door should be a green learn button one (billion code 390mhz) opener.
So please make sure our remote is in Mode 2 (the led on Remote should flashes, when pressed & hold any button).
The method how to change from Mode 1 (factory default) to Mode 2 can be found on Amazon product listing videos.
Also during programming, maybe you can try other buttons on remote (such as small buttons), to see if other remote button works.
If programming works, it should goes very smoothly, definitely not need 15 attempts.
If still not, usually I would recommend erase all codes on opener, then try again.
but if you prefer not to reset opener, please just see if you can return for refund.
Thanks and let me know if it works, or if you have other questions.