My account was hacked, and after that I started experiencing errors.

I was hacked and lost access to my account. After I regained control of my account and logged back into the game, I started experiencing the error shown below. Could you please help me fix this issue, or restore my game progress to 2–3 days ago?

A new season has just started, and I was planning to spend money to complete the new season tasks. However, I cannot continue playing if this error persists, and I may have to quit the game.