I have tried to click on edit list in SharePoint Designer option from the list ribbon,
but unfortunately, I got the below error.
This o15.officeredir.microsoft.com page can’t be found
No webpage was found for the web address:http://o15.officeredir.microsoft.com/r/rlidSPD2013Download?clid=undefined
HTTP ERROR 404
I have SharePoint Server 2013, and the SharePoint Designer 2013 is already installed.
Also, in Central Administration, the SharePoint Designer has been allowed to be used in this Web Application as shown below.