having same issue on my test site
all latest versions of CB and J
I have one user that I cannot change to confirmed manually on the backend.
When they try to login it give them the errorand send them the activation email link with no activation code included.
when I try to manually confirm the user is just reverts back to unconfirmed.
the mail is not caught by spam
resending the confirmation email results in this link
www.mydomina.com/index.php?option=com_comprofiler&task=confirm&confirmcode=
but includes no confirmation code.
this is the only user this has occured on
other users I am able to manually confirm in the back end.
I ideally I would like to be able to RESEND the confirmation email manually.
and/or manually confirm them