Hi,
Thank you for your inquiry. Unfortunately the geographical origin of the sample is not something we collect for our metadata so we do not have that data available. The statement you quoted, is in regards to the ancestry/ethnicity labels that are sometimes provided by the data contributors. However, we have data from over 300 different contributors and over 100 studies, each of which provide different types labels (patient-provided, researcher-provided, country of recruitment), which is why we put that disclaimer.
Please let me know if you have any follow up questions,
Sam