Connected CN470 failed

ChirpStack Network Server
#1

CN470频段总是无法连接成功，能帮助我吗？

%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_201903181716582
微信图片_201903181716582.png763×598 20.5 KB
%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_201903181716581
微信图片_201903181716581.png746×402 14.8 KB
%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20190318171658
微信图片_20190318171658.png1018×543 21.2 KB

#2

Its frequency point always cannot join success.