Very BAD Script:
The plugin doesn’t work with SSL.
I have this alerte:
jquery.js?ver=1.12.4:4 Mixed Content: The page at ‘https://xxx.com/' was loaded over HTTPS, but requested an insecure XMLHttpRequest endpoint ‘https://xxx.com/wp-admin/admin-ajax.php?action=sho_shorten&mode=full&url=https%3A%2F%2Fwww.yyy.com&customurl=URL+Personnalis%C3%A9e+(optionnel)'. This request has been blocked; the content must be served over HTTPS.
You must change all the http to https in your files
In the folder inc -s file integration.php
change the string
‘ajaxurl’ => admin_url(‘admin-ajax.php’, ‘http’),
‘ajaxurl’ => admin_url(‘admin-ajax.php’, ‘https’),
I asked for support, never had.
I Asked for a refund, stil waiting.