Can't join or create server. Could you please help?

Hi. I have a pen friend who installed latest DST from Steam on Windows 10, but unable to create server or to join any, because the game's just freezes and then crashes. No errors shown, no nothing.

She asked me to help. I haven't played DS(T) yet, but suggested some solutions, like verifying integrity of game files in Steam, disabling mods, updating drivers… Nothing worked. And now I don't know what else can be done.

Could anyone help please? She likes Don't Starve and badly wants to play it online. Maybe some advise... Maybe we can provide some technical information, logs or such.

Thanks!