Kindle keyboard works fine, until I try and connect to kindle store

The battery is fine, nothing wrong with screen, its updated, I can read and search on it everything works fine except when I try to connect to kindle store! Then I have bars connected to the internet, but when I try connect to kindle store it says unable to connect at this time try later, as soon as that happens the buttons and screen seizes up and require a reboot! I've done all the resets and reboots, even the one where you hold the home button and push del I've removed battery and re installed, nothing changes seizes every time I try to connect! I ordered books 3 days ago now I cant!