Not able to send or receive msgs in bbm
Hello.i have bbm on my iPhone 5s since 9-10 months. All of a sudden I m not able to send or receive any msgs on my bbm.its either not delivered at all or there is a long delay in receiving or sending msgs. Please note I have full data internet plan and my network coverage is absolutely full.i was able to use bbm perfectly on this phone until last 2-3 days.please tell me how do I rectify the problem.when I send a msg there is a great tick with no D or R sign and same happens when a frn sends me a msg.i hear a ping in my bbm but when I open to see who msgs there is no msg on bbm!