I'm trying to update my account information. Why do I get [501] Object status prohibits operation?

all killer.  no filler.

Some registries require domains to be unlocked before you can make any changes.

To unlock a domain

  1. Click Manage, and log in to your account.
  2. Beside the domain name, click Transfer Lock.
  3. In the Domain Locking drop-down list, choose Disabled, and then click Save.