Having problem accessing your templates via web drive? here is another solution.
Download the installer attached
Once Installed you will need to right click 'Http/WebDAV' and select new and Http/WebDAV
Right click on created name and select Properties
This is where you will need to enter secure.ezimerchant.com in the server address and then in user & password it's simply just your ezimerchant login details as screen shot shows.
Once connected you will see your merchant folder where you can access your template files.