Hi Enomobile,
Are your second UV’s coordinates set properly? You can check this in the Mesh Editor/Viewer and in the details panel look for Lightmap coordinate index is set to 1. If it’s set to 0 it’s using the texture UV map instead.
If you’re still having trouble, post a screenshot of your second UV channel here. You can view this in the toolbar by selecting the UV tab and then a few buttons to the right change the UV Channel from 0 to 1 in the drop down.
This way we can see if you’ve got a good second UV layout and offer some help. 
Thank you!