I apologize if this question has been asked before, but I have not found a satisfactory answer. I staked ADA on Yoroi wallet about a year ago and I stopped tracking/looking at it a few months ago. Now that I am back, I can see that the current epoch is 456, but I stopped receiving rewards after epoch 393. Someone recommended checking the rewards section on Cardanoscan.io, which shows the same amount of rewards as my wallet. Is there something wrong with my delegation or the stake pool?
Quite possible that the pool just stopped producing blocks, was abandoned by the pool operator or something like that.
Cannot be repaired after the fact if that is the case. You can just switch pools to get rewards again in the future.