Dividend-based stock splits and CFDs?

I hold a x2 CFD of a meme stock that has been in the news (not that important), and can't figure out how this will be affected by the stock split in the form of a dividend. If the price of a stock is, say, halved, and I am long on a GME CFD, do I lose money because my original contract was at the pre-split price? Or, if I have a 20% unrealized profit before the split, does it just go to zero and I get more CFD shares?