I cannot confirm how it was programmed previously, but is this definitely a PowerG Hardwire translator? Currently there is a hardwire translator paired to your panel, but the panel is reporting it is programmed as a 319Mhz sensor, not PowerG. If it is programmed as the wrong source it won’t be able to communicate.
“Offline” is a normal status which indicates that supervision of that particular device failed. This is usually due to range, interference, or power issues. Some sensors will also throw offline malfunctions for other issues.
To troubleshoot that translator we will need it back in the panel as it was before. Can you post a photo of the translator and let me know what zones are attached to it so we know exactly what to expect in programming?