Suddenly, we are getting error messages when downloading caches in the area.

When downloading nearby caches, this error message almost always appears:

"Only chars 0123456789ABCDEFGHJMPQRTVWXYZ are supported.

Exception IllegalArgumentException

Send error report"

We are currently traveling in Scandinavia. We have two Samsung Android smartphones and use Locus Maps Classic (version 3.70.17). This worked flawlessly on both devices for years.

Suddenly, however, the aforementioned error message appears in most cases.

What could be causing this? If we can't download geocaches, the app is no longer suitable for geocaching. That would be a real shame! We have always been very happy with the app.