Lightroom Mobile bulk export is not working

I am using Lightroom Mobile application in Samsung F41 ( 6GB RAM, 128GB ROM). I am trying to bulk export photos but export is abruptly closing in the middle. Also, if I am trying to export a couple of photos then also it's taking approx. 3 minutes to export a single photo. I have checked few solutions from the community and I have tried so far: 

1. Clear the Lightroom Mobile App Cache
2. Clear the Storage to make some room in case Lightroom takes the space. Total available storage is 20GB.
3. Cleaned all running processes from Mobile. Total available RAM is 2GB
4.  Pause the cloud Sync 
5. Exporting photos available in local storage 

LightRoom Android Version : 8.3.2

Can you please help me to check the issue and let me know if you will further details to investigate the issue. 

[moved from bugs to discussions - Mod]