There are many reasons why you would be receiving an email which says you need to reconnect.
The underlying problem is that we are unable to fetch any new information from your connection to simPRO, ServiceM8, Xero, etc.
1. The integration has rolled out a new update causing the connection token to become invalid
2. Network or integration outage - We have a grace period of 8 hrs, but will deactivate a connection if we can't contact the integration
3. The person who set up the integration has changed their password in ServiceM8, simPRO, Xero, etc. causing the connection to become invalid
4. The person who set up the integration has left the company causing the connection to become invalid
5. Through some other error, the integration token has become out of sync therefore not allowing Wink to fetch any new data