1. Download/compile new wallet. ( Windows: https://btcpop.co/808.exe  )
2. use newer snapshot: https://btcpop.co/808-699609.zip
3. If you miss coins ( wrong tx info in your wallet ) you could dump your privkeys and import them into a new wallet, the tx history should be correct then again.
4. If you're affected by the max_money bug  and you can't compile on your own you can use: https://github.com/bumbacoin/808/releases/tag/v9999 just to dump the privkeys and import them in a new wallet.
5.  backup your now correct wallet.dat
6.  If you decide to stake again monitor your wallet and make sure its on the correct chain. ( If it splits use the older snapshot again and let it sync with your wallet backup and stakng disabled again ).

Add nodes to your config:
addnode=95.216.45.141
addnode=47.210.3.148
addnode=37.228.235.145
addnode=93.162.0.198
addnode=18.215.154.185
addnode=63.246.104.21
addnode=126.241.203.57
addnode=177.206.150.72
addnode=54.91.165.64
addnode=91.207.175.227
addnode=64.137.165.101
addnode=89.109.14.97
addnode=coins.prohashing.com:6708

Working exchange ( No guarantee it's still working when you read this ):
https://bitexlive.com/exchange/DOGE-808