How to remove the region from the url

Best option, use CloudFront instead, faster delivery to visitors, better for SEO, cleaner URLs.

https://deliciousbrains.com/wp-offload-s3/doc/cloudfront-setup/
https://deliciousbrains.com/wp-offload-s3/doc/custom-domain-https-cloudfront/

Otherwise, you can’t get away from using the region in your raw S3 URLs, especially because your bucket name looks like a domain name so can’t be used in the domain part of the S3 URL (“s3.mysite.com.s3-eu-west-1.amazonaws.com” is not valid, whereas “s3-mysite-com.s3-eu-west-1.amazonaws.com” would be).

I am working in other parts of the website at this moment, but it is in my mind to start using Cloudfront or any CDN very soon. Anyway, I solved already the issue just commenting the part in the code which creates the link, inside a class whose name I can not remember now.

It is working ok and now my region is removed before the link is created.

I do not know if I did something wrong, but by the moment, at least in my case, the link works the same using:

1) https://s3-eu-west-1.amazonaws.com/s3.mysite.com/image.jpg.

Than using…

2) https://s3.mysite.com/image.jpg.

Thanks for your help on this anyway.
It is really appreciated!