The website was updated with some new perks and worker settings.

Here are the changes:

• API perk cost cut in half
• New perks added for high work submits per minute mining (low difficulty), low hashrate notification emails, creating more than 5 workers (some users created several hundred workers which can be a strain on some operations), and a "pro minter" perk that gives you all the perks at a reduced price (you still need to activate them)
• Added "config" buttons for each worker under "my account" -> "workers" with various settings
• Worker setting "default worker" allows you to choose a worker that should be used in case you don't set a worker name in the client or you set one that doesn't exist
• Worker setting "require password" allows you to disable the need for worker passwords (any password is accepted)
• Worker setting "work submits per minute" allows you affect the difficulty the server chooses for you. 20 is default. Set lower if you want higher difficulty to save bandwidth. With the "easy mode" perk you can also set a higher value than 20 (up to max 40).
• Worker setting "low hashrate warning" will email you if your worker goes below the chosen threshold.
• Worker setting "stratum extranonce2" is a bit technical - really only needed for sub-pools
• Worker setting "merged mining stale flush" can be turned on if you don't want the server to tell your client to flush all work when there is a namecoin block change. Not much point turning this off if you are mining with Stratum + it will cause more namecoin work rejects. But could save some bandwidth with gbt and getwork.
• New users now automatically get a default worker with password disabled. The signup page now only takes a user name, plus optional email address
• New workers are now created with password disabled. You can click "config" and set a password afterwards if you want one.

TL;DR: Have a look under "my account" -> "donations & perks" and "my account" -> "workers" in the website menu. Let me know if you have any questions or problems.

Update: note that changes made on the website can take 10-15 minutes to take effect on the mining server