the minimum rule is ignored

Hello, i have a problem with Catna – WooCommerce Name Your Price and Offers,
after a customer puts in the first input as the required price the plug in does not respect the minimum required price rule for the second input.
kindly help out on this.
try out on the link porivded.
!st correct price within the minimum price rage, the plugin works
2Nd input of the same product but with price below minimum price the minimum rule is ignored
thanks