Read the Compatibility tab on the exact product. Match the Minecraft edition, game version, server software, Java runtime, resource-pack format, and dependencies to your setup.
Support for Paper does not by itself mean Folia is supported. An ItemsAdder configuration does not automatically mean Nexo, Oraxen, or CraftEngine configuration is also supplied. Cross-play does not imply a Java resource pack will work on a Bedrock client. Ask before purchase when an important detail is not stated.