@Azuaron The pricing, really. At one point I was paying ngrok ~$99/year for a pro account but that’s now gone up to $240/yr if you pay annually or $300/yr if you pay monthly so that’s way outside our budget as a tiny not-for-profit that doesn’t make any money to speak of.
LocalXpose costs $6/mo and allows multiple ports (80, 443) and pass-through TLS (which Kitten needs) and supports WebSockets (which a few of the other alternatives failed with).