Hi
Unfortunately there is no more o-charts plugin for 32bits systems :
this dates from 2022... when oesenc (the forerunner of o-charts) didn't provide anymore closed source binary and library for 32 bits systems
(I had to buy then a new 64bits
laptop to use
OpenCPN... even if my 32 bits still worked perfectly for
OpenCPN until this bad surprise !)
I suppose you are running OpenCPN inside flatpak :
ChartDownloader, Dashboard, Grib and WMM are bundled plugins of OpenCPN ... they have been adapted and rebuilt with OpenCPNto be compliant with the last version of flatpak
Unfortunately most of the other plugins are not compliant with the last version of flatpak : their sources need to be adapted they need to be rebuilt and then they will appear in the catalogue