Thank you for reporting the issue. I’ve shared your feedback with our engineers regarding the app store upload failure. They confirmed this is due to a recent ~Google policy change. We sincerely apologize for the inconvenience and we will fix the issue with playstore.
Regarding the software connection issue, I tested it and found that enabling the required permissions and restarting the app resolved the problem. You could suggest this workaround to your client to see if it helps.
For your reference, I’ve attached a screen recording demonstrating the steps.