Plugin Loading twice

Dear Sir,

We are using EasyCalcCheck Plus to load captcha on forms included in Virtuemart.
When opening the virtuemart billing form the EasyCalcCheck plugin displays the message "Please fill out this field". Even when the field is filled with the correct value (See image below).



Digging into the issue, we found out that the EasyCalcCheck field is being loaded twice on top of each other). Then when submitting the form only the field on top is filled and the message appears.

//Questions
1 - Do you have any input on why is it happening?
2 - How can we fix this issue?

//System Info
Joomla Version: 3.4.5
Virtuemart Version: 3.0.12
EasyCalcCheck Plus Version: 3.1.0

Appreciated,
SOHO Prospecting Team

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