not work when send email by using contact form 7

I am using Contact Form 7, and I add the file to the attachment to see it in email like this images:

[1]: https://i.stack.imgur.com/lTafs.png

And in the email I see like:

[2]: https://i.stack.imgur.com/ZO0vD.png
[3]: https://i.stack.imgur.com/0DbOO.png

Where is problem, why not attached!! but I see in the link its upload good but not attached ?!