Hello @Caroline1,

Thank you for posting here in the Community. I'm here to assist you with your concern about updating the vendor profile in QuickBooks Online.

You can invite contractors to complete their profile and submit a signed W-9 online anytime in QuickBooks. This feature encrypts the sensitive tax info so they can fill it up on your behalf (see screenshot below).

They’ll either log in with an existing Intuit account if they have one or create a free account to update the tax info with you. The option to switch it off or get an alert is unavailable. Check out this link for more information about it: Invite a contractor to add their own tax info.

You can also open this article for additional reference when preparing your Federal 1099s: Create and file 1099s using QuickBooks Online.

If you have any other follow-up questions about resending the contractor's invitation, please let me know by adding a comment below. I'm more than happy to help. Have a good one.