How to import from Google Reader

Go to Google Takeout

Click, and wait for complete.

Click. Download the zip file. You may need to re-login in step.

Unzip the file, you will get subscirption.xml.

Go back the site.

Click "Import OPML". Upload subscription.xml.

Wait for complete. (Currently, error may appear before complete. Don't worry, the site will load the feed list in background.)