with this information hard to say what is wrong here, you need post some kind of network diagram and old c2960 config and new Cat 9200 config.
Other hand Cat 9200 License is different Essetial License have limited fetures compare to network advantage License.
at the same time now sure what License you had with C2960 switch ?
ping now working, looks like for me some static routing missing i am guessing (once we have network diagram and come config we can guide you)