Yeah, most times logs can tell something.
Nothing major sticks out, maybe someone else will see something I missed in log.
I am not great with Japan, but my browser can translate much of the site.
It seems it’s a pay site, and I don’t take chances if it’s a site out of the USA using money.
It’s sucks where we don’t have access to all sites, as I would try a few different options to see if any worked.
I also am not sure, I fully understand after re-reading the issue. You say the movie is 20:34, and you get a movie that’s 20:32.
20:32 comes to 2 minutes shorter than 20:34. I am not sure if you will miss that much, or maybe it don’t then play at all?
You could try first clearing temp folder to see if any change. Read here > https://forum.dvdfab.cn/d/470541-how-to-use-streamfab-7-and-more-details
You could also try using mkv instead of mp4 in SF options, you never know it may help.
If it happens to other movies also it seems it uses M3U8 manifest, others are reporting many issues with it in v7005, here in the community with sites using M3U8 manifest. I had some issues with another module and had to go back to v7002.
If all else fails, contact SF feedback/support and wait. https://www.dvdfab.cn/contact.htm