Updating email templates gives me ACCESS DENIED error

When I try to edit email templates and click save, the site tries to load for a while and eventually sends me to a blank page with "Access Denied". I believe it is a particular {invoice} tag that is causing the error, or perhaps updating more than one template at once.

Hi Jase,

Thank you for your feedback. Access Deny issues can be related to the Security Firewall. So the ban will be gone within a couple of hours.

I also have the same case. Thanks for the solution!

Thanks for the solution!