Ok have a little time for investigating this further. You have 3 separate issues so you want to use this solution for 1 of those issues: http://forum.ait-pro.com/forums/topic/woocommerce-checkout-403-error/#post-21757. You want to use this code below, which is modifed code for the Google Analytics apostrophe issue AND ADDITIONALLY I am taking a logical guess in the dark here about the blank WooCommerce Checkout page issue since there is no specific log entry to look at. So it is a logical guess based on what I think could possibly be the issue and may or may not work for the blank WooCommerce Checkout page issue if some other thing is actually causing that.
1. Copy the modified BPS Query String Exploits code below to this BPS Root Custom Code text box: CUSTOM CODE BPSQSE BPS QUERY STRING EXPLOITS: Modify Query String Exploit code here
2. Click the Save Root Custom Code button.
3. Go to the BPS Security Modes page, click the Create secure.htaccess File AutoMagic button and activate Root folder BulletProof Mode.
# BEGIN BPSQSE BPS QUERY STRING EXPLOITS # The libwww-perl User Agent is forbidden - Many bad bots use libwww-perl modules, but some good bots use it too. # Good sites such as W3C use it for their W3C-LinkChecker. # Use BPS Custom Code to add or remove user agents temporarily or permanently from the # User Agent filters directly below or to modify/edit/change any of the other security code rules below. RewriteCond %{HTTP_USER_AGENT} (havij|libwww-perl|wget|python|nikto|curl|scan|java|winhttp|clshttp|loader) [NC,OR] RewriteCond %{HTTP_USER_AGENT} (%0A|%0D|%3C|%3E|%00) [NC,OR] RewriteCond %{HTTP_USER_AGENT} (;|<|>|'|"|\)|\(|%0A|%0D|%22|%27|%28|%3C|%3E|%00).*(libwww-perl|wget|python|nikto|curl|scan|java|winhttp|HTTrack|clshttp|archiver|loader|email|harvest|extract|grab|miner) [NC,OR] RewriteCond %{THE_REQUEST} (\?|\*|%2a)+(%20+|\\s+|%20+\\s+|\\s+%20+|\\s+%20+\\s+)HTTP(:/|/) [NC,OR] RewriteCond %{THE_REQUEST} etc/passwd [NC,OR] RewriteCond %{THE_REQUEST} cgi-bin [NC,OR] RewriteCond %{THE_REQUEST} (%0A|%0D|\\r|\\n) [NC,OR] RewriteCond %{REQUEST_URI} owssvr\.dll [NC,OR] RewriteCond %{HTTP_REFERER} (%0A|%0D|%3C|%3E|%00) [NC,OR] RewriteCond %{HTTP_REFERER} \.opendirviewer\. [NC,OR] RewriteCond %{HTTP_REFERER} users\.skynet\.be.* [NC,OR] RewriteCond %{QUERY_STRING} [a-zA-Z0-9_]=http:// [NC,OR] RewriteCond %{QUERY_STRING} [a-zA-Z0-9_]=(\.\.//?)+ [NC,OR] RewriteCond %{QUERY_STRING} [a-zA-Z0-9_]=/([a-z0-9_.]//?)+ [NC,OR] RewriteCond %{QUERY_STRING} \=PHP[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} [NC,OR] #RewriteCond %{QUERY_STRING} (\.\./|%2e%2e%2f|%2e%2e/|\.\.%2f|%2e\.%2f|%2e\./|\.%2e%2f|\.%2e/) [NC,OR] RewriteCond %{QUERY_STRING} ftp\: [NC,OR] RewriteCond %{QUERY_STRING} http\: [NC,OR] RewriteCond %{QUERY_STRING} https\: [NC,OR] RewriteCond %{QUERY_STRING} \=\|w\| [NC,OR] RewriteCond %{QUERY_STRING} ^(.*)/self/(.*)$ [NC,OR] RewriteCond %{QUERY_STRING} ^(.*)cPath=http://(.*)$ [NC,OR] RewriteCond %{QUERY_STRING} (\<|%3C).*script.*(\>|%3E) [NC,OR] RewriteCond %{QUERY_STRING} (<|%3C)([^s]*s)+cript.*(>|%3E) [NC,OR] RewriteCond %{QUERY_STRING} (\<|%3C).*embed.*(\>|%3E) [NC,OR] RewriteCond %{QUERY_STRING} (<|%3C)([^e]*e)+mbed.*(>|%3E) [NC,OR] RewriteCond %{QUERY_STRING} (\<|%3C).*object.*(\>|%3E) [NC,OR] RewriteCond %{QUERY_STRING} (<|%3C)([^o]*o)+bject.*(>|%3E) [NC,OR] RewriteCond %{QUERY_STRING} (\<|%3C).*iframe.*(\>|%3E) [NC,OR] RewriteCond %{QUERY_STRING} (<|%3C)([^i]*i)+frame.*(>|%3E) [NC,OR] RewriteCond %{QUERY_STRING} base64_encode.*\(.*\) [NC,OR] RewriteCond %{QUERY_STRING} base64_(en|de)code[^(]*\([^)]*\) [NC,OR] RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR] RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2}) [OR] RewriteCond %{QUERY_STRING} ^.*(\(|\)|<|>|%3c|%3e).* [NC,OR] RewriteCond %{QUERY_STRING} ^.*(\x00|\x04|\x08|\x0d|\x1b|\x20|\x3c|\x3e|\x7f).* [NC,OR] RewriteCond %{QUERY_STRING} (NULL|OUTFILE|LOAD_FILE) [OR] RewriteCond %{QUERY_STRING} (\.{1,}/)+(motd|etc|bin) [NC,OR] RewriteCond %{QUERY_STRING} (localhost|loopback|127\.0\.0\.1) [NC,OR] RewriteCond %{QUERY_STRING} (<|>|%0A|%0D|%3C|%3E|%00) [NC,OR] RewriteCond %{QUERY_STRING} concat[^\(]*\( [NC,OR] RewriteCond %{QUERY_STRING} union([^s]*s)+elect [NC,OR] RewriteCond %{QUERY_STRING} union([^a]*a)+ll([^s]*s)+elect [NC,OR] RewriteCond %{QUERY_STRING} \-[sdcr].*(allow_url_include|allow_url_fopen|safe_mode|disable_functions|auto_prepend_file) [NC,OR] RewriteCond %{QUERY_STRING} (;|<|>|'|"|\)|%0A|%0D|%27|%3C|%3E|%00).*(/\*|union|select|insert|drop|delete|update|cast|create|char|convert|alter|declare|script|set|md5|benchmark|encode) [NC,OR] RewriteCond %{QUERY_STRING} (sp_executesql) [NC] RewriteRule ^(.*)$ - [F] # END BPSQSE BPS QUERY STRING EXPLOITS