{GPS MODULE + ARDUINO + Esp8266} Push sensor code running only for 10 seconds. Need help with Blynk timer

I studied about interrupts and timers and about blynk timer. I never used Simple timer before so i am new to it. Can you please tell if my timer code is technically correct. Secondly, can you please tell me where i should use which time interval. I am not clear about that .

And what does it really mean in GPS problem. Does this has anything to do with my problem:

Plz dude help. I am a noob :yum: