k3x4

Yes, both sites crashed with your plugin.

The error after incomplete update in debug mail is:
E_COMPILE_ERROR in line 33 /home/********/public_html/wp-content/plugins/easy-wp-smtp/easy-wp-smtp.php. Error code: require_once(): Failed opening required ‘easy-wp-smtp-admin-menu.php’ (include_path=’.:/opt/cpanel/ea-php71/root/usr/share/pear’)

After delete and reupload your plugin everything is worked again.
Seems to be your are problem at your update procedure.