How can I fix my Unreal engine when it does this?

So I have been using Unreal Engine 4 recently to make a game, and ran into problems. First off, I may have accidentally closed out all of my tabs in the editor and I have no clue how to get them back (My fault and also I’m an idiot… Yeah) and also when I try to connect things together to a mesh, it says that the search “cannot change sockets on inherited components” so I might be just going insane and being a weirdo. Please help anyways!