I found a bug.
When I restart explorer.exe process, MudFish’s icon disappears from tray, so I cannot turn it OFF.
And somewhy I cannot authorize at Lineage2.com with my account when I use MudFish. When MudFish is closed - it’s OK, I can authorize.
It seems you only tested with DE Europe (Germany - DigitalOcean) node, right? Please try to test with other mudfish nodes at Full VPN mode. Depending on mudfish nodes, it could be blocked by game publisher.
And always make sure that after node change of Full VPN mode, please visit http://myip.mudfish.net whether it’s applied properly.
I know. However we need to narrow down that this issue is from Mudfish program itself or game item first. So with Full VPN mode and everything is fine, it means there’s an issue on game item.
However what’s difference between “log in” and “authorize”?
I think you can try to install Firefox and Chrome for this test and try because Opera browser isn’t supported by Mudfish Extension. After that you can remove it again. I’d like to see there’s a difference with or without using it.
I install google chrome.
I install extension.
I did successfully sign in.
Then I turn MudFish extension ON and I cannot sign in, again.
Looks like does not matter how MudFish were started.
P.S: It might help you. One my friend is using WTFast and he has same trouble.
Are you meaning that without Mudfish you can successfully sign in to Lineage2.com?
If I guess correctly, it seems they’re tracing a client’s public IP to block weird actions on accounts. Might be that they block accesses from abnormal country not accessed by it or IP blocks. Did you try to pick a mudfish node which locates at same country with you?
Then we need to figure out how Lineage2.com blocks a connection if Mudfish or other programs are working. As mentioned at before, I’m guessing that it’s regional (GeoIP based) block.
Thank you for sending this packet dump. 
However it seems you forgot to enable Full VPN mode. Could you please confirm it?
No problem.
Answer 1:
I suspect a part of google domains has blocked by Great Firewall so you can try to bypass it as use Mudfish DNS Client then you should better set your node up to Hong Kong or Taiwan
mudfish.net/docs/en/faq/nodes.html#which-a-mudfish-node-is-best-to-connect-the-china-game-server
You can try to the instruction to get the Mudfish chrome extension(.crx)
ungoogled-software.github.io/ungoogled-chromium-wiki/faq
Downloading the CRX file
CRX files are downloaded using the following template CRX URL:
Where:
[EXTENSION_ID] is the
extension ID from the Chrome Webstore. This can be retrieved from the
Chrome Webstore URL for that extension, which has the form https://chrome.google.com/webstore/detail/[...]/[EXTENSION_ID]
[VERSION] is the Chromium browser version.
For example, cjpalhdlnbpafiamejdnhcphjbkeiagm is the extension id of uBlock Origin, and 69.0 is for the 69.0.x.x browser versions.
This URL can be used directly by CLI utilities like curl and wget, but it can also be used via a custom search engine.
To set up the custom search engine, create a new entry in chrome://settings/searchEngines, using the template CRX URL as the search URL above after replacing [EXTENSION_ID] with %s. Then, set chrome://flags/#extension-mime-request-handling to Download as regular file.
Installing the CRX file
There are several methods to install CRX file:
Always install extension MIME type requests
Change the flag chrome://flags/#extension-mime-request-handling to Always prompt for install. Then when using the CRX URL from the omnibox or the custom search engine, the browser will prompt for installation.
Drag and drop
NOTE: There are certain circumstances where this method fails on KDE Plasma.
NOTE for Chromium 67 and newer: If the Material Design page is used (which has been default before 67), “Developer mode” of chrome://extensions/ (a switch at the top right corner) must be enabled for drag and drop to function. (Discovered in [#423](https://github.com/Eloston/ungoogled-chromium/issues/423))
Steps:
Have the CRX downloaded to your file system
Open chrome://extensions
Drag-and-drop the CRX from a file browser into the page of the
extensions tab. While dragging over the page, it should state to drop
the file to install.
External Extension Descriptor (Linux systems only)
This example assumes the CRX is downloaded as /home/share/extension_1_0_0.crx. Modify the path as necessary.
To install an extension with ID aaaaaaaaaabbbbbbbbbbcccccccccc, create the file
/usr/share/chromium/extensions/aaaaaaaaaabbbbbbbbbbcccccccccc.json
with following content:
{
"external_crx": "/home/share/extension_1_0_0.crx",
"external_version": "1.0.0"
}
After restarting the browser, the extension should be loaded automatically.
Answer 2:
You can confirm if Mudfish firefox WebExtension working at myip.mudfish.net/
해결됬습니다 감사합니다
다행입니다. 그럼 문제 해결되신 것으로 판단하겠습니다. 혹시 다른 이슈 있으시다면 언제든지 말씀해 주세요.
Much appreciated reply! I managed to get it working after using the CRX install method
Cool! I hope now everything goes well with mudfish. Please let me know if there are any other problems.