Notification in email "Server is up"

Notification in email "Server is up"

Hello,
We just got th Site24x7 service and we age getting email notifications. For example when server is in "TROUBLE" after it we get that  server is "UP". We also receive notifications when server is "DOWN" and after it is "UP". It is confusing. I do understand when server is "DOWN"- "UP", but when it is "TROUBLE"- "UP" is should be renamed or something in email notification.