Difficulty accessing GoogleSheets via Fusion

Hi, I'm trying to use Fusion to read a GoogleSheet through using the standard GoogleSheet connection, but as it updates that it is "waiting for authorization", a pop up window appears stating "This app tried to access sensitive info in your Google Account. To keep your account safe, Google blocked this access."

Has anyone else experienced this with the GoogleSheet connection (or connecting to any other Google tools)? A bit of online research suggests this relates to the 3rd party app's (ie Fusion's) security standards not meeting Google's requirement, but that seems unlikely if the connections are offered as standard in the tool.

Just wondered if anyone else had experience of this, and better still of resolving it!

Thanks!