Relays get messed up. The fetch service is different from each client the way they fetch the notes from the relays is all different. The place you load your pictures too. Your notifications get all crazy. Most of the time you don't get all your notifications. Your wallet settings have to be checked on every client you are logged into. I still get zaps to old wallets from nostr and i dont even have them in my settings. But its stu k out here somewhere. It has become a mess for me. And i been here for a long time. Im no coder im just a regular power user. All on mobile