Need help with opening dragonica client on private server windows 10

[LefMortis]

Hi, I'm using windows 10 and i used this guide https://forum.ragezone.com/f734/guide-setting-dragonica-0-15-a-871341/ and i setted up successfuly my server. Yet when i try to open the client from start file the dragonica.exe starts only in the background and i don't know what to do. Need help please. here is a screenshot of what i meant

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[LefMortis]

It seems its impossible to have a server with chapter 3 or older on windows 10. So i thought of making 2 participations of my HDD and i installed windows 7 in the one and there i did everything again and i could play normaly on my server. Seems to be the only way. Windows 10 doesnt support old clients