Please contact our chat supoort with all the details of your account, so that we can assess your account. (Your registered email id and the type of your subscription)
As of now, I verified with the engineering team and all the systems are working fine.
To rule out browser extensions related issue, please try to log in from new browser (eg. Opera) without any browser extensions.
Regarding the log in option you are referring to, if you have registered at DesignBold via your gmail id but via google plus button, in that case you s would require to use google button and then enter your gmail/google credentials to log in.