Started a flight, came back to my plane in the ocean.

So I hit Grade 3 last night, so I decided on wanted to go on a victory flight while I was off at work. I came back to my plane in the water with 6 violations. For some context, I planned a PHNL-KEWR flight on the expert server with 12hr26min of fuel. I left my iPad at home, and when I came back I only had flown for 1h26min before crashing into the ocean. Meanwhile, I earned myself 6 violations and am now Grade 1. What happened and how can I avoid this again?

More then likely your planes auto pilot wasn’t configured properly. Leading to either a stall or disengagement. Always wait until your established in cruise before leaving the device.