Showing/hiding module title is up to your Joomla Template. Apparently your joomla template doesn't show the module title for that specific module position (i don't know why they did it that way). There is nothing we can do about it. It is a joomla template thing and requires hard coding on your template's PHP files.
Try to enable an another module in the same position. You will see, the module title also won't show up for it as well.
We don't provide free support or step-by-step instructions for not-our-extensions-related issue. Because this issue is definitely "not" related to our module.
You may purchase premium support if you want us to fix it:
and let us take care this modification for you directly on your website.
FYI: You may also try to contact your joomla template's developer, they might provide you a patch to fix it.