Can't access existing vault when setting up Obsidian on ios

Maybe this will help:

  1. In Files, open the iCloud > Obsidian folder.
  2. Long-press the vault folder you want, and choose “Download now”. The folder size will be replaced by download progress info until everything is downloaded. All the files in the folder should now not have cloud icons on them.
  3. Close Obsidian (swipe it away in the app switcher), reopen it, and try again.