This is an error on your site and not the blockchain. You missed the update which was posted several times and teased for months. You are late with the update for a very long time so you stuck on an abandoned chain. You would have never generated this much coins on the majority chain so there is by far less "missed" coins then you would even think. You staked 10 times a day where you would have staked once every 2 or 3 days with that amount of coins -> You really only lost about 30 coins and not anything near to the 200 you want to claim here.

You have to manage your wallets and keep track of updates not doing so will give you problems like this over and over again. We posted announcements and tutorials for the update which you can find here: https://medium.com/bitcoin-green - keeping track of those is your responsibility.