DraStic

I bought the app recently, I'm trying to emulate a pokemon game and I can't because the game doesn't work (I have it on the SD card and in the internal storage) searching the internet I got that downloading another app, zarchive, could solve the problem I do all the steps and when trying to open it with the app (drastic) it does not recognize it.

Try downloading the rom on other sites, it may have been a bad rom.