Side Download Errors

[Harumoon]

Your question

Firefox ESR latest version, Windows 10 Pro, latest app and extension
Hi, I've just been getting constant Side Download Errors. This has been going on for ages, ever since the new UI. It used to work perfectly for years before that. Some sites seem to be worse than others. Today I've been trying to download two Japanese dramas from Kissasian [which was working fine yesterday] but out of 20 episodes I was only able to get 7...it's not the individual episodes that's the problem, sometimes they work, but most of the time they don't.
eg: https://ww7.kissasian.video/watch/mistress---onnatachi-no-himitsu/episode-1.html
just never works, I tried that about 20 times. But some of the other episodes didn't work the first 5 times I tried, then they did eventually work.
I've tried reinstalling the CoApp, same...I much prefer the old UI so I always have that enabled, but I've tried using the new one, same.
I remember when this started happening I found tons of things about this side download error problem in some forum but I just had no idea what the person who was replying was talking about.
I just reinstalled the extension and now it won't even find the videos at all, the extension is just not working anymore.
Thanks

Addon & CoApp version and details

version: 9.5.0.2
channel: stable
build date: 2025-05-28
build options: linuxlic: false, noyt: false, browser: firefox
lang: en-US
license: unset
platform: x86-64 win
UA: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Firefox/128.0
coapp: yes. Info:
{
"id": "net.downloadhelper.coapp",
"name": "VdhCoApp",
"version": "2.0.19",
"binary": "C:\Program Files\DownloadHelper CoApp\vdhcoapp.exe",
"displayName": "VdhCoApp",
"description": "Video DownloadHelper companion app",
"target": {
"os": "windows",
"arch": "x86_64",
"node": "18"
},
"home": "C:\Users\NATSUMI",
"converterBinary": "C:\Program Files\DownloadHelper CoApp\ffmpeg.exe",
"converterBase": "ffmpeg",
"converterBaseVersion": "c30f360955"
}

[Mattmjs]

I tried in the latest stable version with the new UI and it works, the problem is that the download could possibly stop
as the site is heavily throttled. Download speed is very slow and can come to a standstill, you'd be better off finding a site
that offers better service.

[Harumoon]

Thanks a lot for the reply. Actually after I sent that message I tried rebooting my router and now it's fine...for some reason. There was no issue with general internet, just using this extension, so I don't know why rebooting the router would fix that, but, whatever, as long as it works I'm happy :)
Thanks