As the problem is persistent after trying the above troubleshooting steps, I would recommend creating a Support ticket so we can look into your concerns further.
You can reach out directly to a support team in your area using the below information:
US: 1-866-813-2404
US: support@smartthings.com
UK: support@smartthings.co.uk
UK support 0333 0000333
I hope this message finds you well!
^SamsungZell