CC 2018 Mac and Windows stopped working

[Pickory]

Hi,

CC 2018 Mac and Win has stopped working for. I haven't used 2018 for probably a year. I wanted to test a PlugIn in this version, it just does not want to work. InDesign > 2018 all work.

When I launch 2018 I am invited to sign in ( I am already signed in, I can use 2019 ). When I do sigin again, 2018 behaves like a trial version.

Anyone else seeing this? 

Thank you.

P.