ANNOUNCEMENT: Sapphire SAPP wallet update Core v1.3.1 is a mandatory update & requires a whole network update.. You can read more at SAPP official Github
MN Simple performed upgrade of all HOT wallets at servers side, so please upgrade your local wallets as request above. After you upgrade your local wallets please change private keys (you can find it in your email) and simply start back your Masternodes.
Thank you
MN Simple Team