Do you mean you can't see the blue arrows?
1. make sure "Display Premium Downloader" is set to Yes Here.
2. make sure you don't have javascript disabled in your browser
3. check if an adblocker is blocking our javascript from running (such as NoScript). Make sure neither mobilism.org nor mblservices.org is blocked by your adblocker. If you're using NoScript, make sure to allow full site.
4. make sure you're using http:// for forum.mobilism.org, not https://forum.mobilism.org
5. if you're using Chrome, try disabling its built in pop-up blocker
One way to test what the problem could be is using a browser different from the one you typically use, without plugins and where javascript should be enabled (it's enabled by default in browsers). Alternatively you could have been looking at a release where the releaser did not use any of the supported filehosts. Most sections have rules against this so PM a moderator if this happens (in Android: all releases must have at least two supported links, in eBooks: all releases by Major Releasers and Moderators must have at least one supported link).