Depending on the size of the list, the download of followers will take a while. Keep in mind that downloading more than 1 million edges (followers) will max out the capabilities of Excel. Therefore it might be a good choice to “Limit friends and followers per user”.
Make sure to uncheck the box “Import only the Twitter users I’m interested in”. Otherwise, the network generator will look only for edges between the users in the list.
When looking at follower data, we also suggest to limit the download of tweets per user to 1. This will speed up the process.