I experience similar symptoms and I did not find any way to report bugs or contact the developers, so I tag along on this thread:
Setup:
iPad mini 6th gen, iPadOS 18.3.1, SafeSky 3.0.29, SkyDemon 4.1.2.418.
SafeSky runs in the background, SkyDemon is used in full screen to show moving map and traffic.
Description:
In the first minutes of flight all is well and works as intended, Traffic is shown properly.
At some point during climb or departure the cell coverage degrades to the point that the iPad shows “0 bars”, the LTE symbol disappears in the top status bar disappears.
Traffic is no longer shown on the SkyDemon map.
——
So far, so good. This is an understandable limitation of the cell network based data feed.
——
Now the iPad regains cell network and LTE.
SkyDemon still shows no traffic.
I switch to SafeSky as foreground app.
SafeSky also does not show traffic.
The grey bar shows “Offline” (see screenshot).
——
At this point I am puzzled why no traffic is shown while cell coverage is indicated.
I press “Stop” and the SafeSky map immediately shows me traffic.
I press “Take Off” again, traffic now visible in Radar mode as well.
I switch back to SkyDemon, traffic is now also displayed on the moving map again.
Some minutes later when cell connection gets bad again the traffic disappears again and does not automatically recover.
Repeating above steps however reliably “fixes” the problem temporarily until the next time cell coverage briefly drops.
I have not tried the above mentioned feature to switch between map and radar screen.
Interpretation:
To me this looks like a huge untapped potential to get fewer outages if the SafeSky app reliably, or more “aggressively” tried to reestablish its connection instead of me having to press “Stop” and “Take Off” everytime.
Happy to share data and timestamps with the devs, let me know if I can be of help.