Hi rooraa,
There are a lot of factors which results to the pages being blank. What I suggest is for you to completely disable all of your existing extensions, install Mobile Joomla! then enable each of your extensions one by one for you to be able to completely diagnose the issue.
Please keep us updated regarding the extension(s) that is/are not compatible with Mobile Joomla! so that we can do something about it.
Let me know if you have any other questions.
Thanks.