Over/Under Martingale (Football)

Make sure you've added U/O markets and started refreshing them with triggering switched on.
The profile default settings show ld work from start.
If not please share the main screen and/or check trigger/program logs.

I don't see any markets refreshed....

If there any event starting soon then just wait for it.
If everything is set correctly it should start refreshing automatically.
Meanwhile check if it's set: Settings -> Monitoring options -> Start refreshing X minutes before the off.
Note, if you start refreshing manually (or it's started automatically) and then stop it the software wouldn't start it again.