Plutonium

Lock your fps to a maximum of 200.

You never added any email address to the account and now you have lost your password.
Which means there is no way for you to proof it is your account.

Borderless being less performant is normal and to be expected since the game now has to go through window's window manager instead of having full control over your display.

Install this and reboot.

Can't read turkish but the usual suspect is your AV.

I don't, I simply do have a life and responsibilities besides Plutonium.
However what you are showing here is that my fellow staff member made the right call by not going ahead with the unban.

To quote from what they said:

Literally coming at 5+ people at the same time out of nowhere insulting and describing how he'll kill them by slicing their throat

Let the host sync his time.

I talked with the team member who banned you, he does not feel comfortable lifting your ban after what you wrote on Discord.

We don't offer support for pirates.

Try Cloudflare WARP.

Either try a VPN like Cloudflare WARP or a different internet connection.

For the same reason as every one else with that issue: Bad internet.

Yes, that's normal if the reply you received gets moved to trash by us as it was in your case.
But since you really wanna know what the replies were:

Why are you dealing with port forwards when all you want to do is to play between the PCs?
Just use the internal IPs instead of the external one.

Please don't delete and repost the same topic, rather use the edit button.

We only support the Steam versions. This most likely won't change in the near future.

Change the language of it in Steam.

Screenshot the error message and the console output.

Doesn't look like its run on (modern) Windows. Which most likely is your problem.

https://www.microsoft.com/en-gb/download/details.aspx?id=48145