Charged batteries not delivering power?

[Lanny2025]

Hello. We have a 2017 Airstream Bambi International; has two fully charged AGM batteries at present. However, there is no juice anywhere, not to the run/store switch, and strangely enough, the silver monitor by the sink that displays battery voltage/% charge and solar power stored is not illuminating when I press the little black button. So, I plugged into shore power, everything is powered except the batter/solar indicator by the sink. No breakers are tripped. WTH is going on? I’ve had various power supply issues in the past that were generally user error lol, but never had that indicator by the sink nonfunctional. Help! And TIA…

 

[timaff]

any fuses , breakers,
or fusible links with the batteries