Please clear your browser's cache and try to log in again to the forum.
The software from one of the vendors we use for caching and speeding up the forum is interfering with the latest version of the software. An error happens behind the scenes and therefore this quick box does not appear.
I had the same issue as you had so @Zuleika was kind enough to post some updates.
Sorry for taking this long to fix this. I had to contact the vendor after more than a day of troubleshooting.
Yeah, there appears to be some special issue going on with the Safari browser. You may want to try switching to another browser for the time being. People using iOS devices seem to be doing okay with Firefox.