Traffic Inspector Whitelist Regex Not Working?

I’ve been having trouble with the traffic inspector blocking access to php scripts for our membership software which integrates with WP. I tried adding a regex line to the whitelist but it doesn’t seem to work.

It says “To specify a REGEX pattern, enclose a whole line in two braces.” Maybe I’m not formatting it correctly, should this work to allow all scripts in the amember directory, ie. https://my.domain.com/amember/cron.php, etc.

{{\/amember/.*}}

or single braces?

{\/amember/.*}

Either way does not work for me.