Override Ath_Mega_Menu Template

Hi there,

I purchased a mega menu addon and I'll like to override template in order to costumize it, mobile breakpoints specially.

I've tried to override the mega menu template by placing the template within the following paths, unfortunely none of them worked.

1st try:
mysite.com\theme-name\templates\addons\my_changes\blocks\mega_menu\mega_menu_.tpl

2nd try:
mysite.com\theme-name\templates\addons\my_changes\mega_menu_.tpl

3th try:
mysite.com\theme-name\templates\addons\my_changes\blocks\mega_menu_.tpl

4th try:
mysite.com\theme-name\templates\addons\my_changes\blocks\mega_menu\mega_menu_.tpl

5th try:
mysite.com\theme-name\templates\addons\ath_mega_menu\overrides\blocks\mega_menu_.tpl

6th try:
mysite.com\theme-name\templates\addons\ath_mega_menu\overrides\mega_menu_.tpl

Since I'm using CS-Cart Ultimate version 4.11.2, can anybody guide me for placing the template to the right path / location?

Looking forward any suggestions!