Unless you’re an iPhone wizard, it’s sometimes easier to delete your IMAP account from your iPhone and start over rather than trying to edit settings. Here’s how you do that.
Tap Settings. You will find this on your home screen, most likely.
Scroll through settings until you find Passwords & Accounts, and then tap on that.
Find your Pinehurst.net account and tap on that. Please see below.
Tap on the red Delete Account link.
That’s it! Please see our post on setting up a new account to start again.