It seems that they removed buttons from the website that used to allow you to choose what to do. FWIW, you can do all sorts of sessions either for the whole course or any given level in the Android app.
FWIW, this seems to really only be about a missing link. So if you are in a level, copy the link behind the review-button, then replace “review” with “speed” and you’ll have your speed review across the given level.
Or build your own link: https://app.memrise.com/aprender/speed?course_id=[course ID]&level_index=[level index]
Replace [course ID] with the ID of a course and [level index] with the index of a level which corresponds to the number of each level as displayed (1 … x).
Just keep in mind that I only verified whether the link worked, I didn’t check as to whether the SR actually was used words of the given level. EDIT: verified / a SR-session initiated this way only considers items in the selected (see → this posting)
@MemriseSupport: are you guys aware that there’s only a review button within levels resp. that the SR-link/button is missing?
Unfortunately Speed Review is only available from the course view. As far as I know this wasn’t changed recently - but I’ve logged this as a feature request in the meanwhile.
So how come the link I put together in my previous posting actually works? IOW, I just tried it out and adding the level-index argument to the link results in the SR session only covering the selected level.
FWIW, even if nobody took this away unintentionally (as has happened many times in the past!), this would mean to just copy the speed review button from the course view to the level view …