Password
Change your password in Settings, or use "Forgot password" on the login page.
Deleting your account
In Settings, type DELETE to remove your account. This cancels your subscription and permanently removes your login and profile. Some records are kept for a while afterwards as described in the Privacy Policy, for example billing records that the law requires us to keep.
Who owns your work
You keep ownership of what you upload, and you own the outputs you generate where the law allows. The details are in the Terms of Service.