Agree with Stephanie Brundage that the flowers look like dahlia. I’m speculating here, we might be looking at two different plants: a mystery vine, and a dahlia plant (?). The dahlia’s leaves & stems appeared to blend into the vine’s foliage perhaps. If you could make new post with a better focus photo, it will help us to narrow it down for you. For now check out a cultivar named “Kevin Floodlight”. Best wishes! https://davesgarden.com/guides/pf/showimage/101143/

Thank you. I have done further research and I think you are right. Dinner plate dahlias.

It looks like a dahlia. Some are very short but others can grow up to 6 feet tall and may look like a vine. Is this possible?