Cubase Artist 12 will not install

Today when going into my Artist 12 app, it sent up an error message telling me that the license wasn’t found. This has happened before so I did what I do every time, went into download assistant and saw there was an update available. I updated my Cubase 12.0.20 to 12.0.30 but it wouldn’t update. I deleted my Cubase so I could install 12.0.30 and now when the download assistant says that my program is finished installing, I cannot find the program on my PC. I have tried uninstalling and reinstalling download assistant, I’ve tried uninstalling and deleting all Artist 12 files and reinstalling. Nothing is working. I have also tried the windows install and uninstall troubleshooter but it cant find any errors. Appreciate any help, thanks.