I have a level 24 titan and played yesterday afternoon from around 2 pm to 7 pm PT and intermittently got booted from the game with different errors. (Centipede and Caterpillar error codes for the most part) Around 730pm I got a legendary engram for a pair of boots on Venus which actually decrypted as a pair of legendary boots. The item pushed me to level 25 and I logged off until 10 pm or so. While I was logged off, I noticed that on the companion app, my titan was still showing as 24. I thought it was strange but didn't worry. When I logged back in, I realized all the progress was wiped for the day. Frustrated, I persevered and luckily I found another pair of legendary boots in a loot crate. Unfortunately it was for a hunter. I stashed it in my vault and logged off. Today, I have been unable to log into Destiny, but only on my account. Both of my son's accounts on the same PS4 work fine, so I know it's not a networking issue. It's now 8:30 pm on Friday and I would REALLY love to stay up and play.