History Graph data holes?

I’m sorry, I’ve already read the other posts about this questions, but I still don’t understand.
My Arduino push data to cloud server every 30 seconds, but the history graph on the app has many holes in the graphs.
It seems that data are stored only when app is up and running, is this possible? There’s any way to solve?

Hello. The only requirement project should be in running mode (you pressed RUN button) and app shouldn’t be up or open. Are you sure your arduino is always send data? Are you sure it is not corrupted or something like that?

Okay… Now I focus on that!