I haven't used Photoshop in my Windows machine for a while. I only used it to do occasional stuff to my photos that simple photo editors cannot do.

When I opened the app, I was greeted with a banner and a dialogue box stating "this Adobe app is non-genuine and will be disabled soon". (Both were written in Japanese though the original app's language is set to English. I think it has something to do with my VPN.) I couldn't figure what the buttons said but one seems to redirect me to an Adobe subscription page and the other simply closes the app.

I don't have experience pirating stuff like this. I got help from another friend long ago in downloading the whole suite of Adobe products from what I think is a Russian source. I am pretty sure they told me to set up firewall restrictions for the app as well, and I haven't touched the installer or anything similar since then. I don't know if there is something I can do about this or if I should download an 'updated version' of the app from some other source.