diff --git a/build.gradle b/build.gradle
index 37df00d5..5e831210 100644
--- a/build.gradle
+++ b/build.gradle
@@ -43,13 +43,13 @@ ext {
 
     /*      Android     */
 
-    androidCompileSdkVersion = 30
+    androidCompileSdkVersion = 29
 
-    androidBuildToolsVersion = "30.0.2"
+    androidBuildToolsVersion = "29.0.2"
 
     androidMinSdkVersion = 21 // TODO: fix SSLv3 / TLS and set back to 16
 
-    androidTargetSdkVersion = 30
+    androidTargetSdkVersion = 29
 
 
     fileChooserDialogVersion = "1.3.0-androidx"
diff --git a/ui/BankingAndroidApp/src/main/AndroidManifest.xml b/ui/BankingAndroidApp/src/main/AndroidManifest.xml
index e8552e3c..0a13382e 100644
--- a/ui/BankingAndroidApp/src/main/AndroidManifest.xml
+++ b/ui/BankingAndroidApp/src/main/AndroidManifest.xml
@@ -10,6 +10,10 @@
     <uses-permission android:name="android.permission.USE_FINGERPRINT" />
     <uses-permission android:name="android.permission.USE_BIOMETRIC" />
 
+
+    <!-- FileChooserDialog for reading PDFs and exporting CSVs -->
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+
     <!-- Both are required for ZXing -->
     <uses-permission android:name="android.permission.CAMERA" />
 
@@ -25,6 +29,7 @@
         android:supportsRtl="true"
         android:hardwareAccelerated="true"
         android:theme="@style/AppTheme"
+        android:requestLegacyExternalStorage="true"
         >
 
         <activity
diff --git a/ui/BankingAndroidApp/src/main/java/net/dankito/banking/ui/android/views/MainActivityFloatingActionMenuButton.kt b/ui/BankingAndroidApp/src/main/java/net/dankito/banking/ui/android/views/MainActivityFloatingActionMenuButton.kt
index 82cc9ce8..92fbde9c 100644
--- a/ui/BankingAndroidApp/src/main/java/net/dankito/banking/ui/android/views/MainActivityFloatingActionMenuButton.kt
+++ b/ui/BankingAndroidApp/src/main/java/net/dankito/banking/ui/android/views/MainActivityFloatingActionMenuButton.kt
@@ -2,6 +2,7 @@ package net.dankito.banking.ui.android.views
 
 import android.Manifest
 import android.content.Context
+import android.os.Environment
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.FragmentActivity
@@ -18,6 +19,7 @@ import net.dankito.filechooserdialog.FileChooserDialog
 import net.dankito.filechooserdialog.model.FileChooserDialogConfig
 import net.dankito.utils.android.extensions.asActivity
 import net.dankito.utils.android.permissions.IPermissionsService
+import org.slf4j.LoggerFactory
 import java.io.File
 
 
@@ -27,6 +29,12 @@ open class MainActivityFloatingActionMenuButton(
     protected val presenter: BankingPresenter
 ) : FloatingActionMenuButton(floatingActionMenu) {
 
+    companion object {
+        // TODO: remove again as soon as bug that no files are displayed in FileChooserDialog (on Android 10 and higher?) is fixed
+        private val log = LoggerFactory.getLogger(MainActivityFloatingActionMenuButton::class.java)
+    }
+
+
     protected lateinit var fabTransferMoney: FloatingActionButton
 
     protected lateinit var fabMoneyTransferFromScanningQrCode: FloatingActionButton
@@ -96,6 +104,13 @@ open class MainActivityFloatingActionMenuButton(
 
     protected open fun showTransferMoneyDialogWithDataFromPdf() {
         (floatingActionMenu.context.asActivity() as? FragmentActivity)?.let { activity ->
+            // TODO: remove again as soon as bug that no files are displayed in FileChooserDialog (on Android 10 and higher?) is fixed
+            log.info("config.initialDirectory = ${presenter.appSettings.lastSelectedOpenPdfFolder}, Environment.getExternalStorageDirectory() = ${Environment.getExternalStorageDirectory()}, " +
+                    "Downloads dir = ${Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)}")
+            log.info("External storage files: ${Environment.getExternalStorageDirectory()?.listFiles()?.map { it.name }}")
+            log.info("getExternalStorageState() = ${Environment.getExternalStorageState()}, isExternalStorageEmulated() = ${Environment.isExternalStorageEmulated()}, " +
+                    "isExternalStorageRemovable() = ${Environment.isExternalStorageRemovable()}")
+
             val config = FileChooserDialogConfig(listOf("*.pdf"), presenter.appSettings.lastSelectedOpenPdfFolder.toFile())
 
             FileChooserDialog().showOpenSingleFileDialog(activity, permissionsService, config) { _, selectedFile ->