oh damn, thank you - I was so focused on setting the domains back up because last time I did this, I went app by app.
I’l see if there’s a way to completely reset/purge the yunohost install and try again or possibly nuke the server, do the install but not the post-install and then try again.
Edited to add:
There’s no way to completely remove a yunohost instance once it’s been installed, so back to the drawing board according to Best way to uninstall YunoHost so I can reinstall it?
So for anyone finding themselves in a similar situation: don’t do what I did. Instead: spin up a fresh install but don’t go through post, mount your remote drive and see if that works.