action=rpx_token error

I am basic user.
I recently moved from a subdomain to main domain.

I have fb, linkedin and google+ providers for sign-in
Facebook and Linkedin work fine, for me.
I get action=rpx_token with google+. Authentication works fine but it does not log me in.
I see correct data when use the test widget

Other users have reported that the authentication works but they do not get logged in.
My site is http://www.upavadi.net

Is there a way I can delete all properties in my dashboard and start again?

TIA

https://wordpress.org/plugins/rpx/