can't connect my contacts to my google account
I have MacBook Air running on OS X version 10.9.3. Each time I go into contacts I get a pop up saying contact can't connect to my google account and asks me to insert my user password. I've checked this and entered in the appropriate box. I don't get a message telling me that the password is wrong just the pop up coming up again. I've exhausted my ideas for a solution. Any suggestions gratefully received. Richard