See here: https://www.victronenergy.com/blog/2019/12/20/venus-os-v2-41-fixing-byd-communications-and-more/
My thanks to all that helped improving v2.40.
in the mean time the developers are working on v2.50; which primarily means tying up any loose ends wrt Cerbo GX, as well as keeping a lookout / looking into bug reports.
Merry Christmas all!