Fields with OR instead of AND (PRO Version)

Hello,

Have been using the plugin for a long time and its a great one.
However we have encountered a situation where we would like the custom fields to be taken in consideration using the OR operator. So that we can extract more specific orders.
To explain, we have custom fields set up.
And we also have some products in some categories.
We would like to have an ONE export of the orders having :
Products and orders found in these categories
Along with that, we would like to have the orders which correspond to that particular custom field.
The custom field is a date field.
We have 3 of them. When all 3 are activated in the filter section.
We do not get any export fields.

Is that possible ?

Please help.
Thank You.