Invitation link for not working

I received invitation link for to join. But after clicking that link it showing below error
Looks like you are accepting invitation for
another user.
Kindly tell about this.

Can you post screenshot, so this site admin can understand.

Pls see the screenshot of error.

Is it for you or for some of your friends?

Yes this is for myself.

Then, how are you accessing Probably you already have account with the same email.

I have account in discuss but I was getting emails on same registered account for invitation.

I will remove you from the list. Probably discourse is not keeping track of already existing emails while resending the invitations.