Can't open a site(SharePoint Online) in SharePoint Designer 2013

I received an error when I tried to open the site.
The error is it: "Server error: The version of Microsoft SharePoint Foundation running on the server is more recent than the version of SharePoint Designer that you are using. You need a more recent version of SharePoint Designer."

I tried to solve it updating the SharePoint Designer, but the error keep showing me

I've already saw the version of my site which is: 
vti_encoding:SR|utf8-nl
vti_extenderversion:SR|16.0.0.2120

and the version of my SPD is SharePoint Designer 2013 (15.0.4535.1507)

What Can I do to solve it?