The questions are as follows.
There is a problem when requesting Google ad API.
My application use google-ads 3.0 version.
and import com.google.ads.googleads.v1.services.
#1 For each advertiser account, call the API that obtains keyword effect data, but all data that is imported by API calls be zero.
#2 and sometimes get exception error like this io.grpc.StatusRuntimeException: UNAVAILABLE: 502:Bad Gateway
Thank you for reading this question.