RSS Plugin 403 Forbidden after installation

i’m trying to use/configure the RSS plugin but when I try to access it after creating a campaign the webpage errors out.

Any ideas?

@mrmckoy A 403 is often caused by security/anti-malware modules such as apache mod_security or Wordpress Wordfence security. There might be a rule that rejects form fields which include raw html.

Thank you. that was the issue