I can't play Songpop anymore. Want my money back

a couple of weeks ago I learned I needed Windows 10 or better to play SongPop. I have Windows 8 and don't feel like uprading soon.

On 2017, I bought around 1000 tickets to play Party Mode, I eventually used about 50 of them. I would like to get that money back, since I don't see myself playing SongPop in a long time.

What can I do?