First of all, if you have customized the theme to add/remove/update any code, then backup the codes first if you don’t want to lose your customization.
Please follow the steps below.
1. Go to Appearance > Themes
& active another theme
2. Delete the EcoHosting theme
3. 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