I hope this helps someone else.
I recently purchased an android 10 phone and noticed that my audio recording functionality was broken in Android. Not so in Android 9
Running it through Android Studio on the device showed an EACCESS error when the plugin tried to store the recording to the temporary filedestination.
I found this medium article https://medium.com/@sriramaripirala/android-10-open-failed-eacces-permission-denied-da8b630a89df
Which pointed me to a temporary solution by adding something to the Android MAnifest
<manifest … >
<application android:requestLegacyExternalStorage=“true” … >
After that everything was working fine in Android 10 as well.
Sadly this is just a temporary workaround and now I will start digging in on how I need to change my file / storage / temporary storage etc