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Content Security Policy (CSP)
CSP • Section 3.3
Directive whitelists for enterprise web hosts enforcing strict HTTP security headers.

Strict CSP embed option.
Content Security Policy Directives
Ensure strict Content Security Policies allow uninterrupted widget communications.
Required Security Directives
If your website enforces a strict Content Security Policy, whitelist https://*.stylchat.com under script-src, connect-src, and frame-src directives.