okay, so I don’t see what would be causing an error that would give you a white screen, the first thing we’ll need to do is figure that out.
Edit wp-config.php and add the following, or adjust what’s already there.
define('WP_DEBUG', true );
define('WP_DEBUG_DISPLAY', true);
define('WP_DEBUG_LOG', false);
Then when you load the page we should at least be able to see what the error is that’s crashing the page.