Hello, and welcome to the Plant 3D discussion forum!
There may be some info in the Readme documentation that comes with that content pack that can help(?) Please check that.
But it may be that you'll need to work with the connection properties to see if you can get it to work how you want: About Piping Connections
If my reply was helpful, please give a "Kudo" or click the "Accept as Solution" button below (or both).
Martin Stewart
AEC Support Specialist