Android Question problem "unsafe app locked"

We compiled our app at the end of December and were able to install it on any device.
Having to recompile today, the message "unsafe app blocked" comes out, highlighting that it was developed for an older version of android that does not contain the most recent privacy protections.
Even changing SDK does not solve the problem. what should we do?
this is our manifest:

AddManifestText(
<uses-sdk android:targetSdkVersion="34" />
<uses-sdk android:minSdkVersion="21" />
<uses-permission
android:name="android.permission.WRITE_EXTERNAL_STORAGE"
android:maxSdkVersion="34"
/>
<supports-screens android:largeScreens="true"
android:normalScreens="true"
android:smallScreens="true"
android:anyDensity="true"
/>
)
AddApplicationText(
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="$PACKAGE$.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
)
CreateResource(xml, provider_paths,
<external-files-path name="name" path="shared" />
)
SetApplicationAttribute(android:icon, "@drawable/icon")
SetApplicationAttribute(android:label, "$LABEL$")
SetApplicationAttribute(android:largeHeap,"true")
SetActivityAttribute("Elaborazione_Fabbisogno", android:screenOrientation, "landscape")
SetActivityAttribute(main, android:windowSoftInputMode, adjustPan|stateHidden)
AddPermission(android.permission.WRITE_EXTERNAL_STORAGE)
AddPermission(android.permission.READ_EXTERNAL_STORAGE)