I had problems getting triggers to work at the beta testing stage of MFP 7 but all were my own fault. I was doing some silly things with running MFP and this little action list helped me to get rid some of my mistakes.
(i) make sure settings enable triggers to be operated, say 2 minutes before market starts,
(ii) make sure the market is opened for monitoring , say 2 minutes, before start.
Now, restart MFP to allow these settings to work.
Then,
(iii) enable triggers, green bulbs not red ones, and check it's the one you want,
(iv) use the market locator to add your markets,
(v) tick box to start markets 2 mins before off.
Once the market opens, click on the trigger to open it. It should now show the trigger which is not operating because the market is "idle".
If you get to this last stage, everything will work for you.
These were things I wasn't doing properly. You may have other things going wrong but check these for starters.