Crashed Site & Can't Access Dashboard

Please help! I downloaded the Google Maps Builder plugin by WordImpress and it completely crashed by site.

I am unable to even access my WordPress dashboard to delete the plugin and regain control to manage my site. I sent a support ticket to the plugin company, but have not heard back.

The temporary link for my site is: https://b99.fc0.myftpupload.com/

Since activating the plugin I receive the following error message when trying to go to my site:

Fatal error: Uncaught exception ‘LogicException’ with message ‘Function ‘cmb_Meta_Box::autoload_helpers’ not found (class ‘cmb_Meta_Box’ does not have a method ‘autoload_helpers’)’ in /home/content/p3pnexwpnas02_data02/24/2543924/html/wp-content/plugins/google-maps-builder/includes/metabox/init.php:38 Stack trace: #0 /home/content/p3pnexwpnas02_data02/24/2543924/html/wp-content/plugins/google-maps-builder/includes/metabox/init.php(38): spl_autoload_register(‘cmb_Meta_Box::a…’) #1 /home/content/p3pnexwpnas02_data02/24/2543924/html/wp-content/plugins/google-maps-builder/public/class-wordpress-google-maps.php(100): require_once(‘/home/content/p…’) #2 [internal function]: Google_Maps_Builder->initialize_cmb_meta_boxes(”) #3 /home/content/p3pnexwpnas02_data02/24/2543924/html/wp-includes/plugin.php(496): call_user_func_array(Array, Array) #4 /home/content/p3pnexwpnas02_data02/24/2543924/html/wp-settings.php(353): do_action(‘init’) #5 /home/content/p3pnexwpnas02_data02/24/2543924/html/wp-config.php(86): require_once(‘/home/ in /home/content/p3pnexwpnas02_data02/24/2543924/html/wp-content/plugins/google-maps-builder/includes/metabox/init.php on line 38