Cannot refresh Google Analytics - credentials are invalid

We used the Google Analytics connector in PowerBI Desktop. The GA query is complex inc merge & append GA data as also transformations. In PowerBI desktop is refreshing without issues. When we publish to Service it won't refresh giving the below error. This is happening for other files with GA connector used in PowerBI desktop and publish to service. My GA account has more than one site permission. From the community this seems to be a known issue. What causes the credentials to fail? Does it has to do with complexity of query, account etc? Is there any limitations with GA connector? Any ways to fix it or workaround it so we ccan refresh the dataset