Your Purchase Could Not Be Completed my problem please help me sir

It seems as though you have a popup message that says: Contact iTunes Support --> Choose your country or region - Official Apple Support

Please do so...

- Selecting your country

Watch the GIF below

Nobody on these boards can fix this issue. Contact Apple Support as described.

(227062)

The people who answer questions on these boards are mostly other customers, not Apple employees, and won't know why you're getting that message or how to fix it.

(227064)