Since I do not have any experience in using the GOIP interface, I am not able to provide any assistance to you. You perhaps ask the seller in Taobao to see if they can provide any means to fix your problem.
i have no problem to use GOIP to connect to your Macau PSTN. so it is not GOIP issue, it is the IP01 issue. can you tell me the setting for SPA/IP01 in Macau.