Sometimes, when working with multiple stores, caching on your browser can show you the wrong Locksmith admin area. This can be a bit confusing when you see locks for another store, and you're not getting to the one you need.
To get around this, head over to https://uselocksmith.com and log in there with your shop.
You'll be presented with the same Locksmith interface as you would from the apps page in Shopify, but for the correct store. :)