Quizlet API calls fail

[gaul]

Perhaps related to:

Note: As of December 2018, Quizlet has paused issuing new API keys.

From: https://quizlet.com/api/2.0/docs

[gaul]

I tested with both the F-Droid version and compiling from master.

[helloworld1]

I have received email from Quizlet mentioning they are closing their API for non Quizlet App. It seeems to be shutting down on December 2018. https://quizlet.com/api/2.0/docs