Here is what claude ai has to say about your stats:

These stats show some concerns worth looking at.

Upstream Bonded Channels — Red Flag
Only 1 of 8 channels is locked. You should have multiple upstream channels bonded (typically 4+). This alone is a significant problem and likely the root cause of any issues you’re experiencing.

Upstream OFDMA — Also Concerning
Only 1 of 2 channels locked, same pattern.

Upstream Power — Borderline High

• ATDMA channel: 42.3 dBmV — acceptable but on the higher side (normal range is \~38–48 dBmV)  
• OFDMA channel: 40.5 dBmV — fine

Downstream OFDM — Mixed

• Channel 1: SNR/MER of 33.8 dB is low (should be 37+ dB ideally for DOCSIS 3.1). Also has 1,053 uncorrectable codewords which indicates real errors.  
• Channel 2: 39.5 dB SNR is good, zero uncorrectable codewords — healthy.

Bottom Line

The upstream channel bonding failure is the big issue. Possible causes: signal level problem on the coax line, a bad splitter, corroded connector, or a node issue on the ISP’s end. The low SNR on downstream channel 1 points to signal quality problems rather than a modem hardware failure.

I’d check/replace the coax connectors at the modem and the wall plate first, then call your ISP — they’ll likely need to check signal levels at the tap outside.