Here's something that has happened to me more than once:
I come across a drill, such as:
"What is the meaning of the following word: 足りる"
...and I know the correct answer, however I can't remember how to pronounce it. So I look it up in the dirctionary (with some difficulty, since I can't copy/paste the word, and am having trouble finding the kanji using radicals), or at the very least I try to, because upon entering "足りる" in the Japanese search in the dictionary, all I get is a "ごめんなさい, Looks like there were no matches in our dictionary."
So, there's two issues here: First, it's not possible to copy kanji and kana in the drills in case you want to look something up, and second, for some reason I can't find the page for "足りる" (which exists as https://www.nihongomaster.com/dictionary/entry/38824/tariru ) by lookign for "足りる". I had to look up the correct reading on jisho.org, and then look for "tariru" in the Nihongomaster dictionary to find this.
Has anyone else observed similar situations, and are there any good ideas for how to remedy this?