Lost Map Progress and Items Due to Rollback

Hello,

Today while I was running a T15 map, after defeating the boss, my game froze for about 2-3 seconds and I got disconnected. When I tried to reconnect, I received a "cannot join instance" error.

Meanwhile, my friends who were streaming on Twitch did not experience any issues.

After logging back into the game:

My map was gone.

The map completion was not registered.

The tablet and other currency items I had looted in that map were missing.

Additionally, I lost several currencies (around 2-3 Divines worth) that I had previously received from Alva temple trades.

Could you please provide an explanation for this? What could have caused the rollback in my case?

Thank you for your assistance.