Glad you got in! I have had to re-authorise Wavestation on occasions. Simply re download a new license and you will be all good to go. It is all an automatic process. Once done it should just start as per normal. Mine went south when I cloned my C drive some years ago and replaced it as it was making a squeaky type sound. Everything else was fine.
I had to reauthorise Studio One as well. With that you have control over your authorisations in Studio One. You get 5 and if you use an extra one in order to make it work again, you can go in and mange your authorisations. You can remove the extra one you just used and you get it back again.
Love the Korg synths though. I have got MS20 and Polysix as well as Wavestation and M1. On iOS as well for me. They run real nice there too on an iPad. They have done a wonderful job modelling their own synths. Wavestation still sounds awesome to this day.
I run everything on Win 7 and have not updated that in the last 6 years. It proves you can maintain an operating system and still update everything else that is on it. And all without issues. This is harder to do in Win 10. Operating system updates will not usually further anything to do with audio or midi. They are mostly about something else. Once you take your main DAW off the net then that need simply goes away too.