Is there any specific configuration for V2 paywalls for Flutter to work on Android?

Is there any specific configuration needed for the Flutter V2 Paywall to be displayed on Android?
Our Paywall displays correctly on IOS:
 

But it is blank on Android:
 

We hava a very simple flutter code to show the Paywall:

 

 Widget getRcPaywall(BuildContext context) {
    return SafeArea(
        child: Center(
            child: Container(
                color: context.colorsTheme.backgroundColor,
                // RevenueCat Paywall, this will use the default paywall configured on RevenueCat and render it here
                child: PaywallView(
                  onPurchaseCompleted: onPurchaseCompleted,
                  onPurchaseError: (PurchasesError error) {
                    scaffoldKey.currentState?.showSnackBar(SnackBar(
                      backgroundColor: MFColor.destructiveRed,
                      content: Text('Unable to make Purchase. Error code: ${error.toString()}'),
                    ));
                  },
                  onRestoreCompleted: (CustomerInfo info) async {
                    await onPurchaseCompleted(info, null);
                  },
                  onRestoreError: (PurchasesError error) {
                    scaffoldKey.currentState?.showSnackBar(SnackBar(
                      backgroundColor: MFColor.destructiveRed,
                      content: Text('Unable to restore purchases. Error code: ${error.toString()}'),
                    ));
                  },
                  onDismiss: () {
                    navigateBack(context);
                  },
                ))));
  }

And for Android we changed the MainActivity to subclass `FlutterFragmentActivity`

import io.flutter.embedding.android.FlutterFragmentActivity

class MainActivity: FlutterFragmentActivity() {
}

On the logs it shows:
 

E/FrameEvents(31809): updateAcquireFence: Did not find frame.

I/OpenGLRenderer(31809): Davey! duration=987ms; Flags=0, FrameTimelineVsyncId=87981877, IntendedVsync=268106646739576, Vsync=268107380072880, InputEventId=225764247, HandleInputStart=268107382062411, AnimationStart=268107382063921, PerformTraversalsStart=268107418419494, DrawStart=268107581061161, FrameDeadline=268106663406242, FrameInterval=268107381556005, FrameStartTime=16611942, SyncQueued=268107627140171, SyncStart=268107654700536, IssueDrawCommandsStart=268107654913817, SwapBuffers=268107659541994, FrameCompleted=268107662111057, DequeueBufferDuration=3717187, QueueBufferDuration=1295416, GpuCompleted=268107662111057, SwapBuffersCompleted=268107661077723, DisplayPresentTime=531207818577, CommandSubmissionCompleted=268107659541994, 

the line E/FrameEvents(31809): updateAcquireFence: Did not find frame.
keeps appearing in the log after this