You might want to try using Dataman in place of Onavo. It doesn't install a profile, so it probably won't conflict with Tapatalk. I've been using Dataman since September and I really like it.Well apparently there is an issue with Tapatalk, and other forum apps like the eiC app, when the device also has the Onavo Count data tracking app installed. I got a pop-up message a minute ago when using Tapatalk warning me I the issue. I neglected to take a screenshot but a Google search reveals this is and has been an issue for some time. Just a heads up if anyone is still having this issue.