WAF enabled makes Apple Validation fail

I have WAF enabled and whenever I try the App Search API Validation Tool on my domain I get a “failed with 500” error from Apple.

Is meet.jit.si configured with multiplexing enabled? The tool works well in meet.jit.si.

I’m trying to setup Universal Links for the Jitsi SDK example app

Apparently Apple doesn’t like SSL from another port that isn’t 443