I found this in another forum post and it worked for me. Hopefully it helps you too ๐
“File /download-manager/wpdm-core.php function wpdm_newversion_check Replace line no 469 with the following code,
if( ! ( ! in_array($pagenow, array(‘plugins.php’) ) xor get_post_type() != ‘wpdmpro’ ) ) return;
We will add the patch in our next release.”