Open CPN shows only small part of the chart

[Harry00]

   
To whom does this look familiar? I have been searching, but cannot find a solution.

Installing Open CPN on my Raspberry Pi 4b, downloaded some charts. But instead of showing the whole chart, it only displays a small segment of it. Always the exact same segment and i cannot get it to show anything more. What am i doing wrong, who knows?

See the photo taken from my screen to see what i mean. 

Oh, and how can i prevent Open CPN from going to sleep after a couple of minutes?

[PaddyB]

does turning quilting on help?
In right hand menu or press the "q" button.
When turned on the piano keys at the bottom have rounded edges

[Harry00]

Thanks for the tip, but quilting lets the charted region dissappear completely and leaves me with an empty chart. When i unquilt, the exact same region appears again. 

Now an update was waiting, so having it installed and rebooted; still the same issue. Unfortunately quilting was not the solution.

[PaddyB]

"downloaded some charts"..
Which charts? Are they in a chart group?

[Harry00]

@PaddyB
That may be the issue.... Your answer got me thinking and indeed: never realised that i need a source to download the charts from! In the "Read the Docs", it is not clearly stated where to find charts at all, so i started to search more specifically. So i should go to O-charts i understand, and get them from there. Thanks for your answer! I will try again later this week and keep you informed.

Things are quite complicated for a full Raspberry Pi/Open Plotter noob... But willing to learn! 

[Harry00]

Buying and installing charts from o-charts was indeed the solution. It works now and looks great! Now just play around a bit with all it's possibilities, see what it all does.
Thanks for the question/answer!