I can't change my app store country on ios 9. I used to easily do it now it won't let me. Any suggestions?
What the error message you having ? did you try on a different devices such a computer?
Have you checked this : Change your iTunes Store country or region - Apple Support https://support.apple.com/en-us/HT201389
Did you have an Apple Music subscription or iTunes Match subscription ? or may be some store credit? or unpaid order?