What you are seeing is within the expected behavior as of now. The free daily download limit has recently been decreased, which is why you are encountering a pop-up message that states, 'You've reached your daily limit of free downloads. The limit is now set at 3 per day for non-paying Adobe Stock users. Upon reviewing your account, it appears that you have a Creative Cloud app subscription that does not include Adobe Stock and this is the reason why you are seeing the pop-up.