Try changing location of osmand installation
from
storage/82A1-7ABC/Android/obb/net.osmand.plus 
to
storage/82A1-7ABC/Android/media/net.osmand.plus 

With android version 12 and newer this may help.
There are a lot of reports about this access problem.
GrĂ¼sse Peter
[email protected] schrieb am Samstag, 20. April 2024 um 11:50:49 UTC+2:

> On 20.04.24 00:17, Tom Crocker wrote:
> >
> >
> > On Fri, 1 Mar 2024, 13:10 'Martin Trautmann' via OsmAnd,
> > <[email protected] <mailto:[email protected]>> wrote:
> >
> >
> > So what I would like is any mechanism to make osmand faster again - e.g.
> >
> > ...
> >
> > * I could mark certain maps as currently inactive - there are several
> > contries where I do not want to use the bandwith to delete and download
> > the data again and again, although I won't go there within the next 12
> > months.
> >
> > I can't tell from what you've written if you know you can mark certain
> > maps as inactive/ reactivate them as necessary? I have several dozen
> > maps deactivated and only a couple active. It does make a surprising
> > difference.
>
> I wonder whether my system is completely messed up by now, due to the
> changes of Googles memory policy.
>
> For a few days now osmand always asks me on startup about its storage 
> place.
>
> At the moment it's on multiuser space 2 which names a path of
> /storage/82A1-7ABC/Android/obb/net.osmand.plus
> It's just a guess that this might be the "SD-Card".
>
> The file managers that I checked no longer have access to these folders.
>
> So I re-installed the typical maps which I actually need - and those now
> are used again.
>
> However, when I check for my local maps, all the other maps are still
> shown. They are all marked with green, claiming to be the most recent
> version, although all the old ones are from 1.12.2023 while the actual
> new ones are from 01.04.2024
>
> The map info does not show me where those maps actually are. I have the
> icons
> 1) box with dropdown, telling me zero of one files have been deactivated
> 2) refresh spin arrows, do not work
> 3) edit pencil, does not work
> 4) upload from box, which asks me for the file manager
> 5) trash
>
> So the maps are there, but are not there. I guess I'll walk through all
> of them and trash them manually. But when I try, osmand tells me "zero
> of one files have been deleted".
>
> I feel it's not only Google's memory concept that was flawed by a
> protection that I actually do not want, but also by osmands failure to
> provide a useful migration policy and a now corrupted memory concept.
>
> I wonder where else I still have dumps of former map storage locations
> since those were created once and now are not longer accessible, while
> they still are found by some other way.
>
> Deactivation of maps should be done within osmand automatically, in
> order to use only the most relevant maps within <100 km distance for a
> reasonable startup speed.
>
>
>
> I guess I should tell the system setup to delete all of osmand directly.
> Is there any other way to clean up that mess?
>
>
> I do not even understand the difference of "standard maps" vs "sources":
> Standardkarten: 21.2 GB
> Quellen: 33.84 GB
>
> How can I save and export my own data (tracks, favorits etc.) before I
> tell the system to remove all osmand data?
>

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