I am unable to take any type of payment in the sandbox account. I need to set up some test transactions for a demo tomorrow.
I was able to successfully use the sandbox account in the past. Is this a recently introduced glitch in the system?
If so, who should I approach for follow-up?
What errors are you getting? Do you have any additional information as to what you are experiencing? Also what’s the application_id?
Thank you for your quick response, Brian.
Today I was able to take a payment on the Sandbox account.
Great, glad to hear that it’s working as expected. Please feel free to reach out if you have any additional questions. 
thanks my issue has been fixed.