You need to find somewhere better to upload your files to. I downloaded that and it is an .exe file and 5-6 times larger than a normal map. Not messing with that. I don't know what you should use, it's been years since I uploaded anything like this, and the servers I used to use are no longer free. Try asking around or post a thread in "Help"
edit: maybe try this one:
https://www.4shared.com/
edit: maybe try this one:
https://www.4shared.com/