Hey there,
So the hard news is, if you lose progress due to a crash, disconnection or service issue, that progress is typically lost and cannot be recovered. It is always going to be a risk with such unexpected removals from the game you are in. This has been a thing even with the original game it’s just that the original game hasn’t seen any major changes or active service issues that could result progress loss so most player’s haven’t encountered it much in the last decade or so.
The devs are working on service issues to reduce the events that could result in progress loss but it will never likely be a 0% risk. (Please note that even in situations where the data is not actually gone, it cannot be recovered at the support level and would be dealt with by the developers if possible automatically)