Topic: Games from E-shop taking up system memory but not visible in games library

Hi Everyone
Recently games I have purchased from the E-shop have disappeared from my home screen. But when I check the system memory the space taken by those games is unavailable to use, suggesting that the games are still in memory.
Has this happened to anyone else? Did you find an answer?
I have tried to redownload but do not have enough memory free to download them.
Thanks in advance
GoldenTNT