This is from the Dometic site.
“The remedy will consist of 1) instructions 2) remedy kit 3) Recall Response Card to be filled out and returned at the time of remedy application. “
I don’t know if any Dometic service center would sell you the remedy kit and instructions or not, but it might be worth asking.
Read the second page of this document. It describes the issue with photos plus says that the leak tends to show up after 3-6 months or RV use.
Don’t have a trailer so I’m not impacted. Just find it interesting on a slow Covid evening.
47,159 affected units, for what that’s worth.