One response populated in two Google sheets at one time. However, it shows that only one is connected.

This issue might happen due to another Zapier integration User have. 

Please advise User to remove his second Zapier integration to stop receiving responses on two Google Sheets at one time.

They might also find it useful to contact Zapier Support for more detailed information.

Please refer to the ticket below: https://powr-support.zendesk.com/agent/tickets/223754