Okay, first of all: yes I have googled for help without success.
So about a month ago I bought an app from appstore. A few days later it tells me that there have been problems with my previous purchase and I had to check all my payment information for mistakes. Everything was correct so I pressed done. It comes up with a red text saying "your payment method was declined. Please enter another payment method". I keep trying to change some of thr info but always come up with the same error. So I changed something in my address (removed the appartment number) and it worked. Last week I bought another app and guess what? The error returns, only this time I can't fix it. And I am 100% sure that the info is correct, because I use the same card everywhere else without any problems. The weird thing is, I can't even download free apps, or those I've already purchased...
/help
Also sorry if there are any typos. I still haven't gotten used to typing on ipad