Fails PHP 7 compatibility check

Apologies if already answered.

The PHP compatibility checker plugin reports issues. FYI and action as appropriate. Are you aware? Is it fixed?

Info below:

FILE: /wp-content/plugins/easy-digital-downloads/includes/payments/functions.php
1 WARNING AFFECTING 1 LINE
----------------------------------
 1469 | WARNING | Global with anything other than bare variables is discouraged since PHP 7.0. Found $$global_key_string
----------------------------------

FILE: /wp-content/plugins/easy-digital-downloads/includes/admin/import-export.php
1 WARNING AFFECTING 1 LINE
--------------------
 91 | WARNING | INI directive 'safe_mode' is deprecated since PHP 5.3 and removed since PHP 5.4
--------------------

FILE: /wp-content/plugins/easy-digital-downloads/includes/admin/reporting/class-export-earnings.php
1 WARNING AFFECTING 1 LINE
--------------------------------------
 41 | WARNING | INI directive 'safe_mode' is deprecated since PHP 5.3 and removed since PHP 5.4
--------------------------------------

FILE: /wp-content/plugins/easy-digital-downloads/includes/process-download.php
FOUND 1 ERROR AFFECTING 1 LINE
------------------
 184 | ERROR | Function set_magic_quotes_runtime() is deprecated since PHP 5.3 and removed since PHP 7.0
------------------

FILE: /wp-content/plugins/easy-digital-downloads/includes/libraries/fpdf/fpdf.php
FOUND 1 ERROR AND 1 WARNING AFFECTING 2 LINES
--------------------
  73 | WARNING | Use of deprecated PHP4 style class constructor is not supported since PHP 7.
 867 | ERROR   | Function set_magic_quotes_runtime() is deprecated since PHP 5.3 and removed since PHP 7.0
--------------------

Some code may be for backwards compatibility? Leave to you to assess/advise.