Windows client server address support request

can someone please tell me the server name to setup the windows client ?

my Nextcloud URL is box.maildelivery.pw

Windows 10 client reports “timeout while trying to connect”.

Thats not a Nextcloud behind that URL, and also: you should not post your real Serveraddresses here.

In general, you just put your “http(s)://your.nextcloud.tld” into the initial configuration of the Windows client - the software should recognize the instance behind and proceed with the installation. Anyway, just like @Ascendancer stated, the given real-name URL is not one belonging to Nextcloud so you should fix this first before turning to the Windows client.