so far I understand, there are two things you mention and for which already topics exists
that you lost the connection
– can have lots of reasons, starting from your installed mods, your homenet, provider, geo-location you live and so servers, also for some users the usage of PG, etc. etc.
A good topic with a lots of hints might be:
But there exist a lot of others.
that the popup is shown and you lost in some scenarios the control of the airplane
– there is a wish topic to improve “how that popup works” :