You did not send the secret access email or you deleted it by mistake? No problem - as long as you have access to the database, you can look up the long unique ID in the database. You need access to the MySQL server, usually via PHPMyAdmin. Contact your website developer or hosting company if you need help looking up the ID. Once you have logged in to your database, find the options table. This is the table named “wp_options” (the wp_ part depends on your setup, it is recommended to use a different prefix, so perhaps your table is named “wpvbx_options” - look for the table ending with “_options”. Inside this table there will be an option named “wf_sn_cf” - this is where the options for the firewall is stored. The saved data is serialized, so the data might look hard to read. You need to locate the part that is followed after “unblock_url” - inside the quotations marks is the unique ID you are looking for. 
Once you find the id, you can figure out the URL to visit. Add ?snf= to your website URL and then add the ID.
yourwebsite.com/?snf=
becomes
yourwebsite.com/?snf=abf44367da05s0f04dae2c5ab47af6cd
Now you can go enter that URL into your browser and your access will be restored.
We are not able to help you locating your particular unique ID. Please reach out to your developer or contact your hosting company with a link to this article.