Due to the increase number of complains and complications in resolving this issue we have created a tool which will only install CODM offline.
For this please first download the xapk file from below link
Next Download the tool
Than Unzip the file using WinRAR or any Extractor.
Open syzsYAdaTool as Administrator
Select the Engine Your using 4.4 or the 7.1 Beta
Drag and drop the xapk you download from 1st link and Click Install.