Hey you need to redelegate away from that validator. 100% commission means they take 100% of the staking rewards, and give you nothing.
My advice for validators is to skip past the top 20, and look down the list a bit. Also, there is a push to discourage 0% commission, as these people tend to not do anything much for the chain.
Whispernode is a good choice - and is a part of that team and will be coming back to LEO and HIVE to bring Cosmos content here, and 1% commission which is great.
Back make sure you redelegate ASAP. Paradigm are keeping all your staking rewards. Also, make sure you "redelegate", not unstake and wait the 21 days. You can move it without a problem.
RE: 100% commission for delegating to a Cosmos Validator