can't function after buying the licence

I use Joomla 3.3 and mobilejoomla free plugin and website (PC and mobile) function well. However, after buying and installing the mobilejoomla basic 1.2, it show 404 on mobile but all function well when shown in PC. Are there any setting I missed?

The only difference between Free and Basic versions is preinstalled MJ Backlink Remover plugin (adremover.php). Try to disable that plugin and check how your website works.

Do you have "Warnings" section on MJ settings page (right column)? If yes, what messages are listed there?

There is no warning shown.
I think it is a must for the client to have insider's guideline, it is no wonder why I stop all the components of mobile joomla and stay feeling frustrated. 

Feel really puzzled and doing try and error...

Could you send me (denis​@​mobilejoomla.com) URL of your website and login/pass for backend access? I'll try to look at it.