SDL Plugin Installer Subtitling

Hi everyone.

I have Trados Studio 2019 (just installed this morning) and I downloaded the Subtitling plugin. When I double click on it to finish the installation, I have to select the version of Trados I have, and here is the problem : the 2015 I had before is grayed out, but the 2019 version I just installed does not appear so that I can't install the plugin... Where is the problem?

I hope you can help me...

Aurélie