Has the integrated Quizlet import been removed?

The direct integration of Quizlet has actually been removed in Wokabulary 4.

We think the searching for word lists is much more convenient on Quizlet website than how we could ever integrate it.
We want to put our focus on the aspects of actual vocabulary practicing like word management, quiz and statistics.

Of course you can still download word lists directly from Quizlet.com (as CSV-files) and add them to your vocabulary with just a few clicks using Wokabulary's import functionality (Mac only).