Does not support Two-Factor Authentication
Simply doesn’t seem to support 2FA when turned on in your Instagram account. Because this app logs in as you directly, and not via the API, the app needs your username and password. This works, but doesn’t support the second step of the 2FA flow. I get a vague error message "Update your app to log in with two-factor authentication.” — There are no available updates for the app.
timerickson about Uplet: bulk instagram uploader, v1.1