Unable to access epub viewer

Taking a look through the forms I was very plesantly surprised to see that Pleco Android now supports epubs. Unfortunately opening epubs in the document viewer still gives me the same empty page with just the letters PK as it did back when it didn't support the epub format. Is there anything I need to do to activate the feature?

I am using pleco 3.2.68
The epub I am trying to open https://github.com/lingr7/HongLouMeng-ZhiPingBen/raw/master/红楼梦脂评汇校本.epub



Staff member
Could you try saving it to local storage (/Documents folder) and opening it from there? This sounds like a file type detection issue.