Is there any information/guess available when we can expect an update for Daedalus ITN? If it’s only a matter of days I would just keep my 0% rewards wallets and wait.
Edit: After I tried yesterday and today for hours to enter Daedalus ITN, I completely shut down the computer and rebooted. After that, Daedalus ITN showed 0 ADA balance wallets and an incredibly high amount at the rewards wallets. It started to reload the complete blockchain and while doing that, that nice amount of ADA shrunk to the correct size, how sad. 
So maybe rebooting the computer can help! The problem with zero rewards wallets is solved and also I succeeded to open Daedalus ITN.