v1.1.0 is out, and the dev has recently released compiled binaries for Windows and Mac.  PLEASE make sure your client/pool/MN are on the correct chain.  Update at https://github.com/polispay/polis/releases and check your blockheight with http://explorer.polispay.org/insight/

MAKE SURE YOUR BACKUP YOUR WALLET.DAT FILE BEFORE MAKING ANY CHANGES.