Can Indonesians get visas on arrival at Luo Hu? we are from Hongkong to Shenszhen.

Hi, I am Indonesian. Me & my wife & two children have plan to Shenzhen from Hongkong by MTR at August 31. Can we get visa on arrival (VOA) at Luo Hu ? I ever have been to Shenzhen from HK with travel tour, but my wife & my children not yet. I heard it's difficult to get VOA now, is it true ? Thanks.