HTTP 401 trying to check subscription status

I'm getting an HTTP 401 when trying to check a subscription status from a localhost (expected) but also from a reverse-proxied HTTPS address (ngrok). I realize now, in hindsight, I undid too much once I started testing from proxied addresses. Based on https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Set-Cookie#samesitesamesite-value we still need SameSite=None; Secure.