@Darren Slade Apologies for the late reply. Welcome to Microsoft Q&A Forum, Thank you for posting your query here!
I understand that you are facing issue with Failed to retrieve dynamic outputs
for your Logic App workflow.
Please note that this is a known issue reported recently across all regions. Hotfix to all regions have been rolled out and confirmed to be fixed. Dynamic data is now loading properly again. We sincerely apologize for the inconvenience caused.
**
Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.