Are you experiencing an issue when you sync CrewBuddy to your google account and it automatically adds an email notification and a phone alarm notification ?


CrewBuddy isn't the one adding those notifications.  When CrewBuddy adds a new event, one of your other programs or services sees that new event and attaches a default notification to it.  Most often the culprit is Google itself.  Here is a Google support doc explaining how to turn off notifications for the calendar that Crewbuddy is syncing to.
If that doesn't fix it, then it might be one of your other calendar client programs.  If that's the case, then here's how to turn those off on your Apple Devices:  How do I disable calendar alarms before each trip?