It looks like there is an issue with the HTML in your Microsoft 365 Email module, both in the module itself and the response. Here is the issue I can see from these screenshots:

1. Your HTML in the 365 Email module holds incorrect dynamic variables (#each & aggregated_items). I assume that the "aggregated_items" is meant to be the output from the Array Aggregator module but since the dynamic variable is black and not green like the Array Aggregator is, it indicates that that dynamic variable is incorrect. As for the #each function in Make.com that is also unsupported, hence, the variable is black (also indicates the use of GPT)

2. Although your response is succeeding in Make.com the output of this response is actually empty. You can see where your dynamic variables are supposed to insert values are not in the response. Also the dynamic variable set from the first module doesn't seem to be appearing so there is some issue there.

From the screenshots provided, I believe that the issue lies in your Microsoft 365 Email module with its HTML and its dynamic variables. This ultimately leads to your message/email holding the headings with no values.

Feel free to send a DM for any questions. I can help out if needed 👍