Re: Cloudflare's Warp terminates WinSCP's connection to the server.
This rather looks like question that should be asked at Cloudflare's support.
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
. 2023-08-18 20:12:12.836 ..;d;0;2023-08-18T03:09:08.000Z;4;"root" [0];"root" [0];rwxr-xr-x;0
. 2023-08-18 20:12:12.836 xmlrpc.php;-;3236;2023-08-09T06:41:50.000Z;4;"www-data" [33];"www-data" [33];rw-r--r--;0
. 2023-08-18 20:12:12.863 Startup conversation with host finished.
. 2023-08-18 20:15:41.924 Remote side unexpectedly closed network connection