After you download the package from ThemeForest, please unzip it. You’ll see a file called sumi.zip, which needs to be uploaded and installed.
Important: One of the most common reasons people have issues is because they try uploading the full zip that includes demo content, theme, documentation…etc which displays the “The package could not be installed. The theme is missing the style.css stylesheet.” error. Please make sure you upload only the theme which is called sumi.zip.
Now that you made sure WordPress is up to date, you can install the theme, and there are two ways to install Sumi, via WordPress or via FTP.
Install Sumi via WordPress
Step 1 – Log into your WordPress website and go to Appearance > Themes and click Add New.
Step 2 – Click Upload Theme.
Step 3 – Browse the sumi.zip file on your computer and click Install Now.
Step 4 – After the theme was installed successfully, just click to activate it.
If you get the “Are You Sure You Want To Do This” message when installing sumi.zip file via WordPress, it means you have an upload file size limit. You need to install the theme via FTP, or contact your hosting provider to increase the limit.
Install Sumi via FTP
Step 1 – Unzip the sumi.zip file, you’ll get a folder sumi.
Step 2 – Log into your hosting space via an FTP software (Use a FTP client like FileZilla).
Step 3 – Upload that folder to wp-content/themes folder on your hos
Step 4 – Go to Appearance > Themes and activate the Sumi theme.