Customers cant login

For some reason new customers once they set up their accounts and return they cant log in. It gives an error.."Please verify your account"..
But then it says below "your account has been verified".
It won't let them login.

First of all there is no such verify thing in opencart. It has approval feature.
This issue can be related with auto approve field being disabled.

Please make sure auto verify is set to enabled in customer group.

Go to admin - customer groups - edit.
And enable auto approve. Save it.

So customer shall be auto approved on sign up.

If you have custom extension to verify then please check the extension.