As you may or may not know, this will break the ModsDownloadManager, as it clearly will not have access to your browser cookie, and thus not the manifest URL
(Look, it returns 404 to forum too) https://sandbox.enlisted.net/post/zTVOnnI8MH3Hcttw/manifest/1/
Below is the log involving the download error, which matches exactly what i suspect
142.73 SQRL [ModsDownloadManager] Request download mod 'https://sandbox.enlisted.net/post/lLGj8PCSAd0vHkjp/manifest/9/'
142.73 CACH new base url '(null)' is chosen, 0 candidates left
142.73 CACH file cache mounted to 'C:\Users\USER\AppData\Local/enlisted/downloads/mods', maxSize = 307200K
142.73 CACH webcache mounted
142.73 HTTP send request to 'https://sandbox.enlisted.net/post/lLGj8PCSAd0vHkjp/manifest/9/'
143.05 HTTP request to 'https://sandbox.enlisted.net/post/lLGj8PCSAd0vHkjp/manifest/9/' ip: 89.149.224.77 succeed with code 404. times: total 306.85ms, conn 0.04ms, nl 0.04ms. size: 0
And as players, there is nothing we can do about it. This is server side configuration
you know they are not seeing any of these posts.
I have asked people I know and they say we should make a bug report (yes i am still too busy to make a formal one)