Videos take days to render

Hi. I'm new here. I've been trying Kling but finding that videos take several days to render. Every day I revisit the site and see the spinning wheel and the words, "Generating Video. Ready soon." Some of them never render. I have tried three different browsers (clearing the cache on each one), three different computers, and four different networks. Nothing changes this. I'm using the free version. I don't want to pay if I'm going to run into the same problem, so my question is: Does the paid version speed up the rendering? Thanks...