I'm not shifting my files from Esnips since they don't expire and I don't have a storage limit, plus they are free.
If you are getting a message about having a membership: they claim that you have to have one to download music and something else. Nothing they mentioned was anything I'd upload so I didn't think my readers would have a problem, but I guess you are.
Just sign up. They don't spam you and you might end up finding a use for the membership, like sharing a zip file of photos with a family member. You can password protect your zips and you can have invite-only folders.
I apologize if it's an inconvenience to join but I look at it this way, I'm offering things for free. I'm going to do what I can to make it easier on you, though in the end I don't want it to be a lot of work for me. When it becomes work or irritating designers quit. I don't want to be one of those.