Stoat self-hosting: Instance invites?

Anyone here have experience self-hosting Stoat?

After a few evenings banging my head against the keyboard I finally have Revolt and Livekit self-hosted!

It's largely all working through the official stoat-for-web that I'm hosting, but something really simple is preventing me inviting my friends along to try it...

I've set the backend to invite-only and added an invite code to the database... But I can't for the life of me figure out how the devs intend for invites to actually work beyond the backend?

• It doesn't seem to be a feature of stoat-for-web at all.
• The app doesn't support any alternative servers as far as I can tell

Any good workarounds, besides opening up the floodgates...?