Undefined variable: custom error

I've just bought this extension and setup a menu on a dev site. The menu is working apart an issue;
1. I'm getting an error "Notice: Undefined variable: custom in /home/(deleteforprivacyreasons)/public_html/modules/mod_jux_megamenucss3/tmpl/default.php on line 85"

I guess you'll need the dev site URL but it's password protected and I'd rather not post that here. Can I email them to your support?

Hi Actiononline,
Thanks for contacting us and choosing our product!,
Please send account via private message, I'll check for you tomorrow. now I have end hours worked. Thanks

Hi
Your problem is due to your site are conflicting.
an example is that your site is loaded 2 times animate.css file (you see in the image).
please disable the plugin animate.css go.
If that does not solve all your problems, please send me an account of site back-end, I'll check for you. Thanks.

I ran into the same problem.
They found a solution to this problem?
Is it possible to get instruction to eliminate this problem?

Hi Remtima,
Thanks for contacting us and choosing our product!
Please send me the account site via message private, I'll check to help you in the shortest time. Thanks

diepnt wrote: Hi Remtima,
Thanks for contacting us and choosing our product!
Please send me the account site via message private, I'll check to help you in the shortest time. Thanks

Prompt me where and what to do. I'll fix the mistake.

HI Remtima,
Sorry for the late reply.
Can you send me a website address or Teamview. Expect you to send early when I was working. Thanks