Blank Screen After Activating Plugin

Hello, I have download BoldGrid plugin for wordpress, i have install it from “Add Plugin” at WordPress Back End.

The installation run success without any error. But after i “Active” BG, my website become blank with white screen. And i got the following error:

<pre><code>[04-May-2017 18:49:51 UTC] Boldgrid_Inspirations_Update::update_api_data: Failed to get valid updated boldgrid_api_data.  Array
(
[uri] => /api/plugin/check-version
[$boldgrid_api_data] => stdClass Object
(
[status] => 401
[message] => Unauthorized
[result] => stdClass Object
(
[data] => You are not authorized to perform that request.
)

)

)

[04-May-2017 18:49:51 UTC] PHP Warning:  require_once(/home/user01/public_html/user01.com/wp-content/plugins/boldgrid-inspirations/includes/class-boldgrid-inspirations-purchase-for-publish.php): failed to open stream: No such file or directory in /home/user01/public_html/user01.com/wp-content/plugins/boldgrid-inspirations/includes/class-boldgrid-inspirations-inspiration.php on line 402
[04-May-2017 18:49:51 UTC] PHP Fatal error:  require_once(): Failed opening required ‘/home/user01/public_html/user01.com/wp-content/plugins/boldgrid-inspirations/includes/class-boldgrid-inspirations-purchase-for-publish.php’ (include_path=’.:/opt/cpanel/ea-php70/root/usr/share/pear’) in /home/user01/public_html/user01.com/wp-content/plugins/boldgrid-inspirations/includes/class-boldgrid-inspirations-inspiration.php on line 402</code></pre>