Firstly, thank you for running Meowcoin Core and helping secure the network!
As you’re running an older version of Meowcoin Core, shut it down. Wait until it’s completely shut down - which might take a few minutes for older versions. Copy your wallet file to somewhere safe. It's always good practice to backup valuable wallet data for any release. (recovery phrase is adequate)
Meowcoin v2.0.4 is a network support upgrade. While not mandatory, running this version of Meowcoin significantly aids network health. This version of Meowcoin will disconnect nodes not signalling MeowPow support.
Currently no OSX build for this version