I have previously tested the web service URLs on Dynamics 365 Financials, and they worked properly, returning JSON and XML data in Chrome. This video shows the web services working fine as of May 1.
https://www.youtube.com/watch?v=kmxar8kv_1o
On May 10th, I found that my D365 Financials account had been upgraded to version 16552, and I noticed that the web service URLs no longer worked on my account. I access the URLs, enter my username and web service access key, and I only get a blank page in my browser. No JSON or XML data is returned for any of the web service URLs.
I tried deleting and recreating a few of the web services and tried resetting my web service access key, but that didn't help.
I then tested with my partner demo account (MOD#######.onmicrosoft.com), and the web services work properly with that account.
So there appears to be an issue with the web services on my account.
Who can I contact to get assistance with this issue?