link is working for me I just tested it.....
steam@debianbuster:/opt/steam/L4D2_LAST_STAND$ curl -I "https://users.alliedmods.net/~drifter/SAT/SAT%20v1.1.0-win.zip"
HTTP/2 200
date: Sat, 24 Apr 2021 03:50
3 GMT
content-type: application/zip
content-length: 8297793
set-cookie: __cfduid=db2ad7a8e6935d11e43f933889036e64b161 9236233; expires=Mon, 24-May-21 03:50
3 GMT; path=/; domain=.alliedmods.net; HttpOnly; SameSite=Lax
last-modified: Sun, 12 Mar 2017 22
4:20 GMT
etag: "7e9d41-54a90321dc1c3"
accept-ranges: bytes
cf-cache-status: DYNAMIC
cf-request-id: 09a399396f000061e3f9980000000001
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
report-to: {"max_age":604800,"group":"cf-nel","endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?s=fe0uw9AU3UqCJx47k%2FKHu0KRZCMJARS%2B DJUbALCy84oWnwFuMjpZ9AYLCRSGCaLG3gLdkh5eq5jpR nWd1VrD3VOE1bs7Z1uvR5CappxFDYLwmb%2F6vw%3D%3D "}]}
nel: {"report_to":"cf-nel","max_age":604800}
server: cloudflare
cf-ray: 644c5e3bea0961e3-YVR
steam@debianbuster:/opt/steam/L4D2_LAST_STAND$