I pad apps malfunction

[Maksumul]

I have purchased the Quran medina hd from apps store. I have installed it via I tunes. But after installation if I want to log in to my I tunes account the app disappear from the device and it starts loading and the app hangs and asking for wifi connection. I have deserted I pad 3 times and same results happening. I do not have the e mail address of the apps provider to complain. Could anyone pls help me on this.

 

[info]

Are you sure that the iPad is connected to the net? Do you have many programs running in the background?

 

[Maksumul]

Yes my I pad is connected to net. I tried to install the app by 3G then the message appeared to try with wifi or I tunes on pc. After that I could install but the next day I tried to access to apps store by I pad the apps disappeared and started re loading and showing the same message about wifi.

 

[twerppoet]

Some of the larger apps won't install using 3G. If you can connect to a good Wi-Fi network, give it a try there. It should work much better.