Any particular reason why this isn't notarised? I realise it's another hoop to jump through (and an annual fee for Apple's developer program), but given that I'm going to connect this thing to my Stripe account it would be nice if it didn't feel like it was avoiding (minimal! easy!) security checks.
For that matter, it's also slightly misleading that you don't call it out as Catalina-only. I'd love to use it (to wit, I've just paid you for it!) but I'm sure there are still lots of folks putting off the upgrade to Catalina.
(Indie game devs especially, since Steam's upload tools are 32-bit).