UPD: The problem has been resolved, and the GA UA pipelines are functioning properly.
UPD: Our team has ended the investigation on this issue and found that this bug is on Google's side.
We've made several tickets and found other tickets regarding this problem in the logs. So we are waiting for an answer from Google support. We will provide our next update on Jun 23, 15:30 UTC.
We are currently investigating an issue that affects OWOX BI Google Analytics pipelines. Imports may fail pipelines intermittently from any ad service sources. Please, wait while we continue to investigate this issue. For affected Pipeline users, imports for your pipelines will be automatically restarted after the underlying issue is addressed.
Our team of engineers is working on finding a solution to this problem. We will provide our next update on Jun 20, 15:30 UTC.