N2K Tank Levels

I have a CerboGX running 3.51 and it stopped showing tank levels about a month ago. It worked fine for years. Any ideas where to start? The data is on the N2K network as I can get the data on a RPI4. TIA

I didn’t hear from anybody so I decided to perform a factory reset. I read and followed the reset procedure but it never would reset. So I performed a Venus OS reinstall. The reinstall worked well. But, still no NMEA data and the CerboGX will not recognize the two new Fun Sun Kits LFP batteries on the USB ports. Still puzzled so I’m beginning to think it is a hardware issue keeping it from operating as designed. Hope someone with knowledge pipes in here soon. Thanks in advance. Just a FYI, Victron data is being sent out to the N2K and my RPI is picking it up. The GX just is not brining in Maretron tank data any more.

I am troubleshooting a similar issue. Did it work on 3.51 before or was is it a different firmware?

I deleted all tanks and started from scratch. They all are shown now.

How did you delete the tanks?

Login to your VRM. Go to setting and delete devices.