Hold your menu button and off button (top right hand corner of the phone) down at the same time. Hold them in until you see the apple logo. That will reboot your iphone.
Next. Check for updates on Tapa Talk.
If there are no updates then check your log in and make sure you are logged in as "remember me" then try to upload a picture on this thread. If you are not a "remember me" user then you will time out in 20 minutes and it will not let you upload anything.