Fix Google Login Error in Asp.net Web Form

Hello, We are used an asp.net VB - web form to enable our website user to signup/login using google login. now we have error after we signup say: Code: 403 Message: Legacy People API has not been used in project 991459511465 before or it is disabled. Enable it by visiting [login to view URL] then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry. for information we already enabled Google+ API and Google People API. You Can Check The Error from the Webpage Here: [login to view URL] Can any one fix this problem?