You shouldn't use the cracked account at all besides downloading the games. Don't log back into it. Use the game on your main account. If you get ps plus on your main it will work for the game you got from the cracked account. I've been playing overwatch from a cracked account on my main for months.
Also because of how the primary account system works. If the account you get (cracked) has ps plus it will work for your other account (main) you just won't have access to the free games monthly. But multiplayer works for every game. Cheap way to get ps plus if you're to broke to get it.