Something that helped me with recognising the radicals in kanji was a userscript called Jitai. it helped me pay attention a bit more and I realised that even some subtle font changes threw me off with memorising the whole kanji, and needed me to pay attention to the radicals more. I quickly found it easier to recognise kanji in a variety of places outside WaniKani too. My review average dropped a bit at first and the sessions were slower as i got used to it, but it has helped me in the long run.
Good luck in getting rid of your reviews!