No files selectable using "File → Import local file" on iPad

[PostMonsterG]

This is with Drummer 2.0.19, iPad 15.5, Safari

File → Import local file… opens a select file dialog, but none of the files are selectable.

The iPad's files interface hides the extension of the files listed, so sample.opml appears as sample. If you right-click on the filename displayed as sample, you can rename it so it displays as sample.opml (at this point the file is actually now named sample.opml.opml). But neither file displayed as sample nor sample.opml will be selectable.