Hmmm… yes I see that. Only the https://pagearabia.co/sitemap-posttype-page.xml and https://pagearabia.co/sitemap-home.xml do not get redirected. I suspect it has something to do with the date (year) in the URL of the post sitemaps.
I cannot reproduce the issue even with the permalink structure /%post_id%
First, try resaving your permalink structure on Settings > Permalinks.
Then, can you switch the Sitemap > Posts settings to Split by: None? Then the full posts sitemap at https://pagearabia.co/sitemap-posttype-post.xml will be used. Downside is that this sitemap is rather large and takes a while to generate. Maybe the option Split by: Month works for you?
Then consider if you are using any plugin that does redirection to the homepage for certain requests and temporarily switch them off. Or are there any Nginx rules that might be triggered by that .2014. in the URL?