Manually resend an email to contacts who did not open the original

When I follow the following guide: https://knowledgebase.constantcontact.com/email-digital-marketing/articles/KnowledgeBase/5990-resend-an-email-campaign-to-contacts-on-the-did-not-open-report?ic=comm_reply〈 And then select "Resend to Non-Openers" I receive the following error message:

"Unable to Resend to Non-Openers

Resend to Non-Openers cannot be used on a campaign that has been resent to new contacts.

Original email send date: Feb 20th 2024 02:34 PM EST"

I have also been told the following:

"Only automated resend-to-non-openers requires a Standard or Premium account. Any account type can manually resend to non-openers, if it's within the 12-hour minimum to 10-day maximum after the original send. If you've already re-sent the email, then you wouldn't be able to do multiple other resend types to the exact same contacts, as this would risk compliance with anti-spam laws."

However I cannot even get to the options on that resend page to select manual or automatic options, the error message prevents accessing the page at all. And I have not used any other resend types yet, I have not resent these emails before.