My apologies, but during a server upgrade yesterday we encountered some problems that are now supposed to be resolved.
Please restart the application and let me know if you get alerts.
I suggest that until you see alerts, you set the filter to 5 minutes and 0% and have all the game types selected.
In case you still do not see alerts please contact me at
support@overlayzone.com and I'll check what it is.
NB: Sunday is slow on alerts though, since many players do play. If you have no alerts by tomorrow, please let me know.