www.free-webhosts.com, if it's still up, iss a complete directory of free hosts, complete with reviews and ratings, and detailed information about each free webhost.
Or, if you want to go the dropbox route, I'd suggest registering a domain and then forwarding it to the url of your index page. There are free short sub-domain services out there such as .usa.cc, .co.nr etc, where you can register domains and forward them. Also, there's a free top-level domain called dot.tk where you can do the same thing, though it requires a captcha to be filled out.
Another good webhost, though probably not as good as free hosting no ads, is 0fees.net. It doesn't provide much space, but still has auto script installer with support for your basic scripts, and quick loading times.
Also, I've tried 000webhost.com, but my site was always down.
Just some suggestions to throw out there, since I've spent 5 years with, or looking for, a website host.
If you have issues with Scramble, please contact support at the link below. I check here at least once a day, so this is the best avenue for submitting your issues and bug reports.
https://stevend.net/scramble/support