Hello quietangel1958,
If you are using an Apple SD Card Reader, you can use the steps below to import your photos:
1. Connect the adapter to your iOS device.
2. Connect your digital camera to the adapter by USB or insert an SD card.
3. Photos should automatically open to the Import tab. If it doesn't, open Photos and tap Import.
4. Tap Import All to import your content, or tap specific items, then tap Import.
5. When the import is complete, you might be asked to Keep or Delete the media on the camera or SD card.
You can also find those steps in this resource: Import photos using Apple camera adapters - Apple Support
If you need additional assistance importing your photos into that particular app, you'll want to reach out to the app developer: How to contact an app developer - Apple Support They'd be in the best position to help with their specific app and platform.
Take care.