There is a bug causing wrong gas values in transactions ("transaction underpriced" errors) on the network.whalecoin.org
If you have a V3 whale and you're having "Transaction Incomplete / invalid transtation" popup
showing up on the  Whale Network then just try to use the desktop wallet for claiming your rewards.
https://blog.whalecoin.org/claim-rewards-through-desktop-wallet-68763a395d1d