I have straight talk and my internet is not working?

I have had straight talk for a few years now. I was late on my payment, and the next day I paid it. Now the internet is not working. I uninstalled the apn setting, and tried to install another one and the phone is saying "only one apn setting can be configured at a time" but when I go to profiles there are no apn configurations. How can I fix this to have my internet back? I have an Iphone 3gs version ios 6.1.3 Thanks!

When you paid it you should have waited till they turned it back on.

Call Straight Talk support. They are the ones to help you.