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Your screenshot doesn't look like an OData window to me. Can you paste the OData URL that you are connecting to?
Agree with Tim, I have also found that using the JSON connection instead of odata has been more stable. Also older versions of excel do not support odata in powerquery.
If you want to use ODATA JSON - the format is:
https://yourtenantURL/odata/YourTenant/YourGIName/?$format=json
I have many Excel reports setup using ODATA and Power BI, we have adding the json format has been much more stable.