Hi There,
Please follow the steps below.
1. If you have customized the theme to add/remove/update any code, then backup the codes first.
2. Go to Appearance > Themes
& active another theme
3. Delete the EcoHosting theme
4. Upload & Activate the updated theme again
OR
Use Envato Toolkit plugin. Please watch the video tutorial https://youtu.be/ZC68VigIbCQ
Best Regards,
ThemeLooks Support Team