My wallet is no longer staking after updating
Are you sure? Maybe you just have a small ammount and you need to wait a bit to get your share.
Is your wallet unlocked?
I have 22 mio ESP. My wallet is unlocked. Last time I had a share was the 13. this month, so 10 days ago
That's about correct; it averages out to 25% per year. With a small amount you may not see a a stake for a good period of time.