flex galaxy

Hello hopefully someone can give me an answer to this question. Am looking to see if the is a programming software for the flex main thing am looking for is I have wireless fobs that say they can have the buttons changed from default to user needs in the programming software but doesn’t say...

Looking for some help, ive recently changed my phone from an iphone to a samsung, just downloaded an apk file as GX Remote isn't on the play store. Entered the same details as before but its bringing up a fault saying "please check host name/port" .. works fine on the iPhone tho, any ideas?