I have an IP4 with 4.3.3 jailbroke using redsnow on tmobile unlocked using Gevey ultra sim from applenberry.

I bought my phone used to get the ld firmware and it works well. I noticed I did nto have all the apps that are usually on the phone such as the app store and you tube. I went to youtube and it asked if I wanted to install the youtube app which I did without any trouble. A few days later I went to download the appstore from apple and i get an error message pop up in safari that says cannot open page because the address is invalid. I get the same thing when I go to facbook. It will open the page but give me the error when i press the option to download the app. How can i fix this?