Blast from the Past issue claiming rewards

So I claimed all my rewards for this event, then my internet service went out. I played offline and made the mistake of saving my game I guess. When my internet came back, a bunch of my rewards are missing and the game is telling me there’s data missing from my save. I tried to download an old save from the cloud hoping it was at a point to fix this issue. It was 5 days prior and it overwrote my recent auto save so my recent save is gone. How can I claim my event rewards again? I tried to search them in build mode but they’re not showing up. Please help!