Victron VM-3P75CT showing incorrect values

I have a Victron VM-3P75CT. It was installed by a professional, the clams are on the correct wires and the unit is showing wattages in the Victronconnect app.

However, these values are completely unrealistic. Often a large negative value when my solar panels are not producing anything significant or anything at all at night.

The values are changing and during the day they are often something like -2700. 2 of the 3 fases show negative values while only one has solar panels on it.

What is happening?

All i can think is since it is evening you would be drawing power from grid, the clamps are the wrong way around on the wire.
The other reason for over or under reading is the clam is not properly closed or damaged.

From the manual…

Summary

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That was it, thanks