The App Store on my iPad Pro 9.7 on iOS 9.3.4 started to fail. Random 'Your request produced an error. [NewNullResponse] messages appear everywhere. First, on Featured on certain tabs. I tried everything. Restarted the iPad, logged in and out of the App Store, until I decided to reset all settings. There the bug went away from featured, but now the Top Charts tab on its entirety won't open and displays the same error. I saw one thread here like three years ago with the same topic that went unanswered. As per other places, I have tried everything they suggested. I don't know what else to do. The Apple help page is useless. What can I do?