Explore iOS app version 2.16 (478791), import gpx file is not possible.

The App shows the files in the folder, but they are semi-transparent and cannot be selected for import. This applies also to Basecamp created gpx files.

I am willing to share any log files and gpx file, if this helps with the analysis.

My basic aim is to download good hikes from various internet platforms as gpx file and import the to my GPSmap 66s using an import to the Explore app first and then sync.