I am using Quectel EG91 for my application. I got timestamp using AT+QLTS=1 and it worked fine but now it is not giving me back the timestamp, just OK or +QLTS:"". I have double checked the network registration, I get +CREG:0,1 which is okay. The modem does all the TCP/IP configuration and even connects to the URL. I can even get response from the https server as well.
How come it worked before and now it is not getting the timestamp. Any help would be much appreciated.