From June 1st, 2018, you will no longer be able to use iLok 1 to authorize your Softube plug-ins.
Don't worry though, your licenses will still be there. You'll simply need to transfer them to an iLok 2 or iLok 3, or better yet - to your computer itself. Machine-based licenses require no dongle at all, and Softube licenses allow three activations, so you can easily have your favorite plug-ins installed in more than one place.