Ok, so I messed with the downloader a bit and was able to get a single doujin downloaded. I tried the Librewolf method and got the same results of just blank static images, so I switched back to chrome and realized on the sidebar thingie it requests that you activate 'developer mode.' I followed the steps
You must be registered to see the links
(it was pretty easy), closed DLsite completely and reopened it, and now the chinese download button will appear when I refresh the DLsite play page. When I click download a little white box will appear withing nothing on it, but it did download the file and didn't have any image loss that I could see.
View attachment 4575631
That said, whenever I tried to download any other doujin the white box would pop up before it would quickly take me to the actual scrolling site and not download the files.
View attachment 4575633
Any doujin with the little green book icon (which is many of them unfortunately) takes me to the scrolling site without the downloading the files. Doujins with a designated jpeg download don't do this, but the white box just sits there without downloading anything. I uninstalled and redownloaded the script to see if that could 'reset it' but that didn't do anything.
I also tried this with and without a VPN which didn't make a difference
Regardless, it's still worth a try to enable developer mode and see if you can get it to work, Maybe try activating developer mode on Librewolf too to see if that makes a difference. If all else fails, perhaps we could ask Obe11 to log into our DLsite accs and download the doujins onto his computer then send us the files, lol. His seems to be the highest chance of working consistently given the english download button he's got.
Obe11, Let us know if you'd be down to do that lol