Hello, we’re sorry to hear that you’re facing a 404 error with your client’s sitemap. This issue can often be resolved by flushing the permalinks in your WordPress admin area. Here’s how you can do it:
- Navigate to Settings → Permalinks in your WordPress dashboard.
- Click the Save Changes button, even if you didn’t make any changes on the page.

This should help fix the 404 error. If the issue persists, please reply to this ticket with the URL of the site so that a human agent from our support team can assist you further. Thank you for bringing this to our attention!
Sources:
Rank Math Sitemap Issues and Their Fixes » Rank Math
This is an automated reply from Rank Math Support Bot. If you need further assistance, please reply to this topic and a human support agent will reply to you shortly.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.