I have Community Builder 1.4. I have couple of sites with it with legacy enabled. One seems to work fine. The other gives the following error and I cannot register people on the site with this.
"Could not check this email: Please double-check: Needed for confirmation."
I know this error has come up before, but I have not been able to find the solve for it. Can someone please help me with this? I can't work on this another hour. My eyes and mind are now gone.

Thank you