You're seeing this error because your username or email address is linked to more than one account on the portal. This can happen if a previous account exists — for example, a retired user profile — that shares the same email address.
This can't be resolved from your end. Contact the HS Direct support team and they'll fix it for you.
Live chat — use the chat icon in the bottom corner of the portal
Email — [email protected]
⚠️ Note: When you get in touch, let the team know you're seeing the 'More than one row exists' error and include your username or email address so they can locate the duplicate account quickly.