I had Whatsdog in my phone working fine, but the app crashed and I uninstalled it. After a few days there was a trial done to check the stability, but didn't show up on my phone. I uninstalled it and then tried to re-install, but on registering the contact it says "Server error, please try it later". Is it the app's fault or my phone's? That app is working fine on other phones except mine. If it is my phone issue then I have deleted cache, Play Services is updated, Google Play framework is updated. I even deleted my Google Account and resigned, still no joy. I have Google Nexus 5, Android 4.4.4 Kitkat.