Why does it say "Connection Failed to GSPro" when I try to connect in labs?

Click on Change license type in GSPro.

Update your GSPro license by going to the GSPro License Conversion Tool and select Protee VX.

Afterwards, in the connector, click "Clear setting", restart the connector.

To change In GSPro: Settings -> Game -> System -> "Reset GSPro connect" and choose ProTee VX.