Same for me. It was working around a month ago, today I wanted to switch to a different Cleverreach account.
At first I got the message that my account does not have appropriate permissions.
That could be solved by enabling “REST API” for the cleverreach user account.
Afterwards the connection seemed to work fine, but the Lists did not update.
Disabled, deleted and reinstalled the plugin => no change, the old list was still there.
Disabled, deleted the plugin and delete the two rows containing “haet” from the options table of the WP database and then reinstalled the plugin.
Now I get exactly the phenomenon described above, an empty error message box and no Lists showing.
WP_DEBUG shows the following on /wp-admin/admin.php?page=cleverreach:
Notice: Undefined index: success in /var/www/vhosts/ich-nehme-ab.at/httpdocs/wp-content/plugins/cleverreach/includes/class-admin.php on line 299
Notice: Undefined index: message in /var/www/vhosts/ich-nehme-ab.at/httpdocs/wp-content/plugins/cleverreach/includes/class-admin.php on line 300
If I can help to solve this by providing data, I’ll be happy to. Also in german language ??
Christian
tethis IT
https://tethis-it.at
Vienna, Austria