How did it operating when you were using the device previous to all this trouble?
What is the operating procedure? What did it do previously? What does it do now instead?
You have told us nothing, nada, nil, about what this meter is supposed to be doing. From the schematic we are pretty certain that it doesn't dance and spit pennies, but that's about it. If you want us to bother with any more replies, please humor us. Please tell us something about the meter. If it's a common model that we can find on the net, a manufacturer and model number might be enough. If it's a kit or magazine project, we'll need to know where you got the plans and we might ask for a copy of the operating instructions. We cannot read your mind.
Of course you can continue begging for help without telling us anything about the meter model. Yes, you certainly could.