Quote from: yurez on Today at 05:53:59 PM

XSN Mandatory Wallet Update V1.0.28–31 May 2021

We have released our latest core wallet version 1.0.28 which is a mandatory wallet update. This update focuses on patching a critical security bug that we have discovered.
If you host your Masternode on the Stakenet cloud, _https://cloud.stakenet.io/login through MNaaS then we have already updated all Masternode servers and ask you to update your local wallet (the wallet that holds your Masternode collateral).
If you stake your coins through a TPoS then please ensure you have updated your local wallet and your TPoS server to the latest version. If you use a TPoS Merchant then please ask your merchant to confirm that they have updated your TPoS VPS to the latest wallet version.

https://medium.com/stakenet/xsn-mandatory-wallet-update-v1-0-28-31-may-2021-8ad05e8cf138

so 1.0.27 was buggy... great to have discovered it.