What WaniKani calls radicals are actually more like mnemonic components - they’re used to describe kanji in as few pieces as possible.
Only some of WaniKani’s radicals are on the 214 radicals list, and I rather suspect that not all of the 214 radicals are represented on WaniKani (though I confess I haven’t counted).
If you’re here purely to study the 214 radicals specifically, this may not be the place for you. However, it does help a fair bit with informal search-by-radicals systems like Jisho has.