Hello Paul,
I apologize for the issues you are facing with your sitemap and the timeouts reported by Ahrefs and PageSpeed Insights.
Based on the information you provided, it seems that there might be a discrepancy between the sitemap location reported by Ahrefs and PageSpeed Insights and the actual location of your sitemap. The link you shared, https://rankmath.com/kb/fix-sitemap-issues/#file-appears-html-page appears to be correct and loads fine in a web browser.
To address the timeout issues and the reported sitemap accessibility problems, you can try the following steps:
- 
Check Sitemap Submission: Ensure that you have submitted the correct XML sitemap to Google. You should submit the sitemap available on your website at https://rankmath.com/kb/fix-sitemap-issues/#file-appears-html-page.
 
- 
Plugin Conflict: Check for any plugin conflicts that might be affecting the sitemap generation. You can use the Health Check plugin to identify and resolve any conflicts.
 
- 
Server Resources: Verify if your hosting package provides enough resources for your site to run smoothly. You can check this by navigating to Tools → Site Health → Info from your WordPress dashboard and comparing the server requirements with your current values.
 
If these steps do not resolve the issues, please consider reaching out to your web host for assistance or open a ticket with our support team here for further help.
Thank you for bringing this to our attention, and we appreciate your patience as we work to resolve these issues for you.
Best regards.
Sources:
Rank Math Sitemap Issues and Their Fixes » Rank Math
		
	 
	
	
	
	
 
			
				
	
	
		
		Hello,
Thank you for your query and we are so sorry about the trouble this must have caused.
Rank Math is using this path for your sitemap: yourwebsite.com/sitemap_index.xml. If you’re visiting the sitemap using this path, yourwebsite.com/sitemap.xml it will simply redirect to yourwebsite.com/sitemap_index.xml.
We checked your sitemap and we haven’t seen any issues with it.
Please check the sitemap section in your Google search console and let us know here if there’s any error shown there.
Looking forward to helping you.
		
	 
	
	
	
	
 
			
															
					
					
					
						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.