The reward systems are very different in the different projects that offer Masternodes. Some have a simple equal reward that is constant day per day. Others have an algorithm where there is a factor of luck if the masternode gets a reward or not. If the latter is the case for your Masternode then it means it can come days where you are unlucky. This usually follows by days with more luck and maybe you might have days with a lot of luck and many rewards.
There is nothing we at Goldnode can do about this. We monitor the masternodes to see if they are operational – but we cannot guarantee any rewards.
If you think that the operation of your masternode is problematic please send a PM to one of our admins in Telegram/Discord and we will have a look.