By default, if there is no conditional rule provided for the field then it will get displayed for all the products.
>> To show the field for all the products.
No need to provide any conditional rule. Keep the Field Display rules empty as shown in the below screen-shot:
https://prnt.sc/r8yf1v
>> To show field for a particular product.
You need to set the Field Display rules based on the product.
https://prnt.sc/r8ytmg
>> To show field for a particular category.
You need to set the Field Display rules based on the category.
https://prnt.sc/r8zc0i
>> To show field for a particular Tag.
You need to set the Field Display rules based on the tags.
The fields created using our plugin will display on the product for most of the themes.
If you are facing any issue in showing the field on the product page then we believe that it might be a site-specific issue.
Could you please raise a ticket through our website? We hope our technical team will be able to help you.
Thank you!