The online PDF conversion service is very unstable and goes down often for converting CBD Excel templates and business documents. Customers and Partners are finding it unstable and it is relatively cumbersome to monitor its failures especially when it is a batch job executing all your business documents by ER email destination. There is no retry logic for failures when calling the service. It is extremely disruptive for the hours or days the PDF conversion service isn't working. And in some cases, it can be business-critical if some business documents can be sent out at the right time.
A lot of business users and consultants are complaining about the service. See below Yammer thread:
If you agree with me, please vote for this idea. - Enabling the "Utilize application resources to perform CBD documents conversion from Word to PDF format" feature to include Excel templates as well would be a huge improvement on D365's output management functions.