"No cards found" for Stroke Order test

I just got Pleco and am using it on an iPhone SE. I created a dozen flashcards from the dictionary and am trying out the flashcard tests. All the other tests (e.g. review only, self-graded) work fine. But when I choose Stroke Order a dialogue box pops up saying "No Cards Found". I can't find a way around this.

Any suggestions? Thanks.


Staff member
Do you have any single-character cards? Stroke order only works on those. (with multi-character you'd see common characters way too often + rarer ones not often enough)
You're right! I didn't have any – they were all 2+ characters – but I went and added a single character and it worked. I'll try to adjust my flashcards accordingly. Thanks for your help.