Problem with Google data sources connection
Copying over my post from another thread (https://community.powerbi.com/t5/Issues/DataSource-Error-The-downloaded-data-is-HTML-which-isn-t-the/idc-p/1505315#M62529
The fix by changing the privacy level to "anyone with link" in Google Sheets is a problem for users with clients that have a concern re: data privacy and thus, is not a long term solution.
I found that if you Embed instead of Link when Publishing to Web and then use the URL in between the code below you can connect to the Excel table in PowerBI.
<iframe src="URL"></iframe>
The one issue with this approach is that there are slight differences between the way the table imports (e.g., empty rows in row 1 and 3) which cause a little rework in Query Editor. Fine if you have one workbook; however, a pain if you have many workbooks and data sources. Also, whose to say this won't also be affected by a change one day...