The shrines tell you how many favors till you receive an emblam. It would be nice to know how many you have left for the day (like you do the the coins).
What I think he means is that there is a limit to how much favor you can donate to a shrine per day, for arguments purpose lets say 1000. Bob (made up player) wants an emblam, but needs a total of 1200 to get his next emblam for lets say Mab and Lem, he already has 200 in each so if he donates 1000 more favor (the max allowed in a day) to one of those then he can get his emblam! The problem is bob already donated 1 favor to one of these already today but can't figure out which one. The only way for him to find out at the moment is to try to donate 1000 more and wait for the message of ' are you sure you want to donate ____ it will push you over your limit of favor for ___ for the day' and if he choses the wrong one thats 999 favor that can't be used for the emblam until the next day that he could have used if he knew how much of the limit he had used for the day for each favor.