Sign in, open Settings, press the row with your address, then Your links. Each link shows its model, how long until it expires, its views and In Nearby if it is listed. Open one for Copy link, Remove from Nearby and Delete link; press it again where it now says Delete for everyone. Whoever opens it after that sees This link was deleted by its owner.
Only links the account manages are listed. One shared while signed in is the account's at once. Links made on this device while signed out are offered after sign-in as Add N links made on this device to your address, and only Add claims them. A link never claimed cannot be deleted; like every link, it stops working 30 days after upload. A copy someone already opened may stay cached for a while.
Remove from Nearby takes the model off the public Nearby list, and the link still works. Delete takes the link away from everyone who has it, and cannot be undone.
Open Your links on the device that made it and press Add when it offers them. A link made signed out on another device can only be claimed there.
No. The model stays on your device. Sharing it again makes a new link.
30 days from upload. A link from the site's own gallery is its public page, which does not expire.
Delete account removes the account and every link it manages, for everyone who has them.