This is my first time using trading bots. I set the AI strategy grid not and in the first hour it said your profits are 14%. The next day my profits where -1%.
The bot will keep running unless you told him to stop or to take profit. To take profit, you can use in the advance settings and set the Take Profit Price if you want to stop the bot when it reach certain price.
If you keep the bot running, the profit will still depend on the market. In your case, probably the market is increase until you get 14% profit, but since you keep the bot running and the market price dump, it takes away the profit. You can always manage your bot. Closing the bot when you think it already performs well and gain enough profit, press the stop the bot to realized all the profit at any time.