I'm installed wearTheme but, occurrence this error: Failed to upload theme. Make sure you are not uploading already existing one. If so, try deleting it manualy before resubmitting.
The archive should contain only one root plugin or theme directory.

I'm using version install docker in digitalOccean.  

Hello,

Zip package from our store contains widget and theme, to upload theme to GrandNode you need to unzip the whole package. Open it and upload only directory with theme, it should looks like: WearTheme.zip -> WearTheme -> Content/Views and the rest of files