HELP southern Portugal

Hi

Need to find someone who can look at the Victron set up in my camper van conversion.

I’m in southern Portugal. Have alarming readout on the one readout I have on voltage drop.

Afraid it looks scary. I’ve had issues with my camper van conversion electrics for a few weeks now. Took it Victron dealer in southern France thought there were no issues. Had a new alternator belt fitted by Mercedes garage since then. Had 2 flat main van issues since then. Something is happening to cause main van starter battery to be depleted.

Would like to take to Victron specialist in southern Portugal. I’m in Evora. Heading to Tavira.