I'm running excel 2016 and wins 10 64 bit. installed the basic program then upgraded to the advanced version. after entering the activation code, the upgrade features are not available all the time. when I try to get historical values, it says I don't have the correct version enough thought it shows "advanced" on the license information. I have to reenter the activation code and it doesn't work all the time. I have to keep doing it and when it works I pull one set of historical prices and I can't get historical prices on the next stock. I have to start all over again. what is going on?