Here is a fix that Jeff posted in another forum, and I am reposting it here. However, this fix is an update to what he had originally posted. He has tested this and it works consistently well.
[Also, for those who have Deleted prayer Connector and Create new one mentioned above, please recheck your site because I do not know if this works or just temporarily worked because of caching. We would recommend the fix below. Also, just FYI -- you need to post at least one time, before this breaks, so try two posts in the new page. ]
If you open the file at typo3conf/localconf.php and scroll down around line 170, you'll see the following configuration for the WEC Connector and RealURL...
'74' => array(
array(
'GETvar' => 'sub',
'valueMap' => array(
'subscribe' => '1',
),
'noMatch' => 'bypass',
),
array(
'GETvar' => 'respond',
'lookUpTable' => array (
'table' => 'tx_wecconnector_entries',
'id_field' => 'uid',
'alias_field' => 'subject',
'useUniqueCache' => 1,
'useUniqueCache_conf' => array (
'strtolower' => 1,
'spaceCharacter' => '_',
),
),
'noMatch' => 'bypass',
),
),
just change this whole section change to:
'74' => array(
array(
'GETvar' => 'sub',
'valueMap' => array(
'subscribe' => '1',
'unsubscribe' => '2',
),
'noMatch' => 'bypass',
),
),
Note that the change above added an improvement from the original with the 'unsubscribe'.
You can edit this file by going to your FTP server and to the site root and it is under typo3conf/localconf.php. Or if you have quixplorer extension installed, you can edit it with that (t3quixplorer). Then make sure you do a "clear cache in typo3conf" to make this work.
Let us know if you have any other issues with the respond button.
-Dave