Same problem here too! Tried all the steps above, no change. Still shows as offline in Google Home. What's weird for me is, it all used to work just fine! But broke at some point.
Model: 7130X - Roku TV
Serial number: YN00AX077847 (J3C95A077847)
Software version: 14.1.4 • build 7709-30
GC version: 12.8.19
Timestamp: 2025-01-08T09:24Z
Issue ID: 47-010-620