Since 31/01/22 all the download files become corrupted.

Thanks for your reply. When I say the file is corrupted I mean the zip file you download cannot be extracted because "the archive is damage".

This some concrete example. This is a zip test file which contains a pdf. If I try to download the file from this url ( https://dl.dropboxusercontent.com/s/y33dnhk2rgquju4/testfile.zip?dl=1 ) from my browser I can extract it without any issue. If I try to do the same from my server it results corrupted.

This is the curl output from my server (check the wrong "content-type") [Result: Corrupted]:

 nginx  ⌁ root  /etc/nginx  curl -I https://dl.dropboxusercontent.com/s/y33dnhk2rgquju4/testfile.zip?dl=1

HTTP/2 200
accept-ranges: bytes
cache-control: max-age=60
content-disposition: attachment; filename="testfile.zip"; filename*=UTF-8''testfile.zip
content-security-policy: report-uri https://www.dropbox.com/csp_log?policy_name=blockserver-usercontent ; sandbox allow-forms allow-scripts allow-top-navigation allow-popups
content-security-policy: form-action 'none' ; report-uri https://www.dropbox.com/csp_log?policy_name=blockserver-noscript ; script-src 'none'
etag: 1644342873714211d
pragma: public
set-cookie:  uc_session=BDnnO07ayQJM8sbiAijB34ctfMey60W0C4YcU6nxwEKs5vcZ8gYtQtZyJh1cATqI; Domain=dropboxusercontent.com; HttpOnly; Path=/; Secure
x-content-type-options: nosniff
x-server-response-time: 204
content-type: application/json
accept-encoding: identity,gzip
date: Tue, 08 Feb 2022 18:05:15 GMT
server: envoy
strict-transport-security: max-age=31536000; includeSubDomains; preload
x-robots-tag: noindex, nofollow, noimageindex
content-length: 11867
vary: Accept-Encoding
x-dropbox-response-origin: far_remote
x-dropbox-request-id: 0f3550a667b246b4884a9781edbd423f

It's always worked until 31/01/22. No server update has been made since 2 months.