CepiPerez.
I'm a happy user of your wonderful app. I'm suffering the "Server response was: blocked".
I've posted a bug on your bitbucket issue forum, offering myself to help you solve this issue, in case you had no time to do so, in case your app's code was available for download somewhere.
Please, let me help you. I really need a fully functional Whatsup.
Contact me asap, so that this bug can be fixes asap.
Thanks,
m.