Connection between BigQuery and PowerBI not on the right project

Hello, 

I am trying to refresh my tables in PowerBI but it keeps showing me the same error for any table I try to refresh : though this project 'bc14' is not related to the project I am using.

All my tables are from '232a' as show in the query editor : and there are not mentions of the project 'bc14' 

What I have tried : 
- Clearing the cache -> this did not work 
- Resetting my credentials -> this did not work 
- Specifying a Billing Project like below to force connecting to '232a' which is the right project -> this did not work and threw another error 

-  Connecting to the table via another Billing Project -> this did not work and I have the same issue as right above
- Connecting to the same table in another project -> this did not work 

I am kind of short now on where this might be coming from ... I see that the issue is not new and happens quite often but I couldn't find any solution so far. 

Would it be possible to get some help from PowerBI support team please ? 

Many thanks, looking forward !!