I have the same problem, mine is loading for couple of hours and showing some numbers. Check the screenshot:
BAS Issue.png
My version is : 27.8.1 downloaded yesterday on 27 Sep 24

Received HTTP code 502 from proxy after CONNECT
This error appears after connected to proxies, proxies are luminati based, i don't know why this happens something if there 40% success rate, 60% is failed with this error, trying to ignore with 'Ignore Fail' but still occours, can someone please help me to fix this issue?