A relay only serves events it actually received, so one that joined later never had those older notes. History in Nostr lives per relay rather than per app, and a timeline stopping about a year back i...
That gap is what Nostr Vault fixes. It runs a relay on your own device, so your notes and your follows' notes get saved there as they arrive. It also pulls your older notes back in from the relays that still have them. Your history stops depending on which public relays happened to be around when you posted. It depends of if your relay saw it first. Point every client at it and your phone and desktop see the same timeline.
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