I've got a problem with the NL plugin of Satollo.net.
Choosing "Double Opt-in", subsribers normally receive the message, but the link doesn't work:
500 Internal Server Error The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator, *** and inform them of the time the error occurred, and anything you might have done that may have caused the error. More information about this error may be available in the server error log.
I don't have the faintest idea to fix this problem. Can anyone help me?