I am noticing that my executions are not updating predictably. I run my spreadsheet multiple times a day, but recently it has started failing to update. If I'm lucky it will update correctly once a day. If I try to run multiple times trying to get correct data, it most often just returns exactly the same data. Is there now a limit to how many times you can update your data each day, or over some specific time period? Marketxls used to perform flawlessly, but now, not so much.