One advantage of vector charts is that you can pick and choose which details you want to show on the screen.
The disadvantage is that the manufacturer may make this choice for you. They may choose to omit certain labels, etc. at certain zoom levels. Only showing them if you zoom in far enough. Or they may just not show some stuff ever.
They may also give you the option of what level to show. But this option may be buried down in menus somewhere, labeled God-knows-what.
eg: There were lots of posts in the OpenCPN
forum about text not showing. It was only because the defaults didn't show it. And to the beginning user, the options were not found so easily. The defaults were since changed and the posts have stopped.
If I were you, I'd try zooming in all the way (you probably already did this). Then look through the menus looking for display/details/text/labels kind of options. Or look in the manual or online forums
for some of those same keywords.