The main reason, why your app is not working anymore, is, that the Blappsta plugin has been deactivated, deleted or has not been updated for a long time. When the plugin is not active, the app is not able to display content from your blog. That's why we want to ask you to update the plugin and afterwards open the app again. If the error still occurs, please contact our support.
Please note: Apple often rejects app updates because of a deactivated plugin. If that happens, we contact you via mail, so please make sure, that you receive our mails and that you check them regularly. If we don't hear back from you within 4 weeks, we will have to delete your app.