Dataset Not Showing In Einstein Analytics

I have executed a CSV file upload through the REST API using the InsightsExternalData and InsightsExternalDataPart objects.

When I log into the Einstein Analytics platform and look in the Data Manager, it shows that the files were uploaded successfully. However, when I go into the Data tab and look at the Datasets, none of these show up. See screenshot below

These datasets sometimes show up on the main wave page, but when I click on them, I receive an error stating that I do not have access to this dataset or it has been removed.

This is a developer company, so I am the only account set up in the org and should have full administrative rights.