Salesforce API Sandbox

Using Web to lead i can configure Production ORG and Sandbox ORG but I would prefer the API.

I can connect to my production environment but not to my sandbox environment.

Login with Salesforce takes me to login.salesforce.com, I can change this to test.salesforce.com and then login. I am presented with the authorise and click yes.

Returning to Gravity I get “this authorization request has expired, or (less likely) the IP is restricted or invalid login hours.”

The log says:

2018-02-20 3:02:41.875560 – DEBUG –> get_api(): The access token is empty – app is not yet authenticated
2018-02-20 3:03:38.895375 – DEBUG –> processSalesforceResponse: Received access code (aPrxnkBfDzonEr74L3qR.Z5TsRP35onU5LN_GqSdYT_FyUNkxY_GKYSv9VjnCSfIIX6OiO89Cw==). Now fetching Access Token.
2018-02-20 3:03:40.183238 – ERROR –> processSalesforceResponse: Clearing token, since there was an error.
2018-02-20 3:03:40.183463 – DEBUG –> Token was cleared.
2018-02-20 3:03:40.184226 – DEBUG –> Refresh Token cleared
2018-02-20 3:03:40.184381 – ERROR –> processSalesforceResponse: This authorization request has expired, or (less likely) the IP is restricted or invalid login hours. [Raw error message: Error in retrieving token: “invalid_grant”]
2018-02-20 3:03:41.349131 – DEBUG –> get_api(): The access token is empty – app is not yet authenticated

Would the plugin be going back for an access token to login.salesforce.com?

We don’t to keep pushing test level data into Production.