Just tried to grab my suros regime from my vault. A error message came up saying something along the lines of "we could not find this item, check your loadout". After refreshing the page to see if it would be fixed, nothing would load. I tried closing the app and restarting it, and got the popup "bungie.net servers are down". I can tell their not, but the companion isn't working. This all happened to me roughly within the last 10 minutes of this post.
Hi there. You'll need to check your Vault in-game.
The companion app will show an error if you haven't refreshed the app after making changes in-game, or if there was an error in transferring an item, it should go to your Vault.