This looks like cool software and something I might be interested in, but I hate hate hate locking SSO behind the "enterprise" tier. I wish this wasn't so common.
SSO is a two party system, which means even if you have everything configured perfectly, your customer can still mess up their Okta setup. And no amount of docs will stop them from doing that.
And when they mess it up, they'll blame your auth for not working. And if it's an enterprise customer that's fine. Just spend a day debugging for them. But if it's a free tier user, it creates pure headache with no upside.
Disclaimer: I am a co-founder