[Sephiroth]

On first sight, one would say that Upstream power at 58.dBmv is too high and might cause instability at the next landing point.

On second sight, if this is examined in conjunction with your lowish SNR, one could understand whay the modem has a high power output.

And, looking again, your receive power level is out of spec and very low which I'm certain would cause instability.

You can check your internal cabling - good condition, properly screwed in etc. You could check your wall box for damp/corrosion. You could check your stree box for door not open. It looks like a service call if your cable is in good nick.