I'm glad that you were able to resolve your issue and thank you for posting your solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others ", I'll repost your solution in case you'd like to "Accept " the answer.Issue:
integrated MISP with Sentinel the feeds are not ingesting into Sentinell
Solution:
You have resolved the issue by modified your script by updating the tenant ID, client security, and other information
The other side about the documents, we don't have any documentation or a direct partnership with this ISV at the moment. For help with integrating their solution with Microsoft Sentinel, we suggest contacting Wing Security.
If you have any other questions or are still running into more issues, please let me know. Thank you again for your time and patience throughout this issue.
Please remember to "Accept Answer" if any answer/reply helped, so that others in the community facing similar issues can easily find the solution.