Hi,
your template seems not load bootstrap javascript framework, can you please give me a backend access?

As requested. I think I see the issue; this template uses Warp Theme Framework....

Hi,
fixed

I have added following code at parameter Extensions->Templates->ot_optik - Default (theme)->Settings->Additional Scripts:

<script src="/media/jui/js/bootstrap.min.js" type="text/javascript"></script>

Warp Theme Framework

This is a PHP framework. this is ok.

This template is based on Mootools Javascript Library, from Joomla 3 Mootools library has been replaced by JQuery and Bootstrap in all Joomla functions. So in your template you need to use 2 javascript framework (Mootools and JQuery) also without Easy Profile, this causes a load of more than 300kb.

Anyway now works , in next release we will add a code to force to load Bootstrap Javascript, so you can remove this parameter (next release scheduled this week).