Sodaq sff 412 not giving subscribed topic message after sometime

I am using mqtt library from sodaq (mqtt over tcp sockets).
I am able to publish a message to a topic with it. Integrated my subscription code as well for a topic. But after sometime i am unable to get subscribed messages, publishing works fine every time.

From reference to older thread [“TCP socket fails to read after a short while”] i have tried AT+UPSV?, it gives +UPSV:0 as well.
Kindly provide help asap. I faced this issue at my final stages in delivering of my product.

Thanks in advance

Hi @anuprit,

Did you only try with the build-in library or also with our library?

Best regards,