Disable Plugin for specific products

Hi,

we’ve got products with fixed shipping costs based on their shipping class and encounter the problem, that both options:

– fixed shipping costs
– wooreer shipping costs

are displayed on the checkout page. This leads to having a product with two different, and sometimes way too different, shipping fees.

We want to only show the calculated shipping fee with wooreer, if the shipping class has not been set to a fixed price.

How and is this possible?

Thank You,

Max