Tilt Connection Issues - Maybe?

[DeniqueCoelum]

Hi folks - Tilt hydrometer question here. I'm using my Tilt for the first time, and the data feed has been a wee bit dodgy. As can be seen from the screenshot attached, it wouldn't send data for a while, then it would consistently, and now it's not again, as of five hours ago. I can't see any consistent factor which is causing it to go offline. Wondering if it just goes offline when there's no significant changes in the SG? As I say, Tilt newbie here, so I'm probably overlooking something. Thanks in advance for all responses.

My kit:

Grainfather Conical Fermenter Pro
G-Cast
Orange Tilt (original version)