Our API Import can only parse CSV data that uses commas as the delimiter. Our CSV File step, however, can parse comma, semicolon, and tab delimiters, so for now, I’d suggest downloading the CSV File before importing that file into Parabola.
For your second question about posting CSVs automatically when a flow is set to run, we don’t support this natively right now. Here’s a similar feature request we’ve gotten where @David_Daniels offers his workaround to this problem by using Dropbox. Don’t forget to upvote that feature request and reply with your support for the feature.