ec2 instance not connecting to mysql workbench

i made an ec2 instance, put an inbound rule for 3306, made a remote user with peivilages, when i try to connect the user in another computer it works but only on the teminal, when i try to connect fron the workbench it gives me the "could not connect to ssh tunnel : authuntecation failed" popup screen. i assured that the keypair is right, the username and pass are right. could really use some assestance.