Hi, I'm having a problem with magento: 1.9.0.1
When I apply a general discount coupon for all services of 10% it works normally I place large periods of 1 or 3 months
However it happens that the next day something about 24 hours after the coupon stops working, at first I thought it was cache I did all the cleaning process but the problem keeps happening.
I saw some reports in forums about the version of php affect but in that chaos it is in php 5.6 which has compatibility.
I do not know what I can do to correct this.
