I too am having this issue amongst others.
I am also having the following error sometimes too Notice: Undefined variable: wp_dlm_db in /home/websiteaddress/public_html/wp-content/plugins/email-before-download/index.php on line 38
WordPress database error: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘WHERE id = 569’ at line 1]
SELECT * FROM WHERE id = 569;
Warning: Cannot modify header information – headers already sent by (output started at /home/websiteaddress/public_html/wp-content/plugins/email-before-download/index.php:38) in /home/websiteaddress/public_html/wp-content/plugins/email-before-download/index.php on line 47
I cant seem to be able to update the pluggin at the moment either Im currently working on version 3.6
https://www.petrel-ex.co.uk/product-detail/led-area-light/
on the technical form
any help people can give would be great