PHP Developers Network

I've just recently purchased a Theme on templatemoster and the TM Mega Menu Module isn't letting me add rows!
I'm able to use the simple menu function, but need to use the Mega Menu option and have the bells and whistles.
Is there something I have missed or need to select? I've followed the online video tutorial and have read the directions on how to, but the add rows button doesn't seem to go any further once selected.
I've contacted the devloper 3 times but haven't heard back from them. I've reset the module also.
Mean while I'm trying this module: Mega Menu PRO
but I don't know if it's better
Does anyone have any suggestions on what this issue may be?

If you don't need a complex menu, I would suggest you to use default Mega menu from Prestashop
it's very good module and have enough for you to create a simple top memu
Hope it hepls