[Sephiroth]

As a matter of interest, what are your downstream levels? If they are low then two possibilities immediately come to mind:

1/
Your coax cable may need tightening at both ends;

2/
The maintenance involved moving your tap point in the street cabinet and it got moved to one with higher attenuation.

If your downstream power levels are not lower than -3 and indeed are above zero, then there is a definite issue on the VM side. It’s worth checking with your neighbours and let us know what’s happening with them.