Hi,
In the support case, Gregg already provided en-us.json for i18n folder to you.
However, it seems the label of widgets are garbled, so you may need to replace en-us.json under <RA Management Server>/webapps/datamanagement/i18n/widgets folder.
Note:
If widgets folder is not existed under i18n folder, you need to create the folder and copy en-us.json for widgets.
I already mentioned to Gregg in the case.
Regards
Yas