EDIT: being behind cloudflare makes some url inaccessible with Brave on mobile. The captcha never solves. I know it's a very specific issue but worth knowing. It's an issue I encounter frequently on the web.
- OR click "Get Started" from https://affine.pro
I did encounter plenty of glitches related to zoom and toolbars disappearing on firefox. As I didn't sign up all the AI integrations are not working; as someone else suggested it would be cool if I can just enter an API key somewhere. I recently tried out excalidraw. Really like the looks and how the arrow snapping works there. Excalidraw is MIT licensed so perhaps you can integrate it?
Or perhaps Notion invented the slash commands? Not sure now...
---
Also: perhaps localstorage doesn't work for you (platform, permissions, browser, etc) so the account seems required.