This is how it works on P3D is the same from each version, you need to update your add-ons. Many add-ons never worked from v2 v3 to 4, 5, nothing was dead, it’s just nature of product maturity. Once Asobo implement Season, welcome to another era and move on for that type of add-ons.
Weather and “season” I would avoid buying these, because many stuff will be changed and implemented in the core sim.