Hi there! I understand you're encountering an "invalid key" error while trying to register on the Prominence Member Portal app. I'd be happy to help you get this sorted out.

First, could you please clarify a couple of things for me?
1. Are you entering a registration key or code provided to you by Prominence during the registration process?
2. If so, where did you receive this key (email, physical mail, from your provider)?
3. Have you checked if the key was entered exactly as given, including capitalization and any special characters?

Sometimes an "invalid key" error happens when the registration code isn't entered correctly or has expired.

Here are some steps we can try to resolve this:

1. Double-check the registration key you have and re-enter it carefully on the portal.
2. Make sure you're on the official Prominence Member Portal site or app to avoid any issues due to incompatible versions.
3. If you received the key by email, verify that no extra spaces were copied unintentionally (this happens often with copied-and-pasted text).
4. If your key was physical or provided by your healthcare provider, confirm with them whether it is still valid or if a new key is required.
5. Try using a different web browser or clear your browser cache and cookies, then attempt registration again. Since you're using a device with WebKit on Windows 10, trying Chrome or Edge browsers might help.

If after these steps the problem persists, the invalid key may be related to the system backend or account setup. In that case, I can help escalate this to Prominence support to verify your registration key validity and assist further.

Could you please try the above steps and let me know if you still get the invalid key message? If yes, please also share if there are any other error details shown on screen.

I’m here to help you get this fixed!