You need to monitor your node! We do not guarantee 100% uptime because it's impossible with so many elements out of our control.
We recommend syncing your wallet every couple of days to update your income. In case of doubt please check your income via the coin's block explorer.
Please be aware that your wallet's status can be wrong. Therefore we recommend monitoring your masternodes in here: https://masternodes.online/monitoring/
We are monitoring the server on our end and will notify you:
1. if you have to restart your node due to server issues
2. of compulsory wallet updates
However our monitoring does not cover all disconnections that can happen.