I was late to update the wallet as I didn't keep up to date on phore news unfortunately. I had a staking wallet running 24/7 on an old computer with just over 600 phore. After updating the wallet I now have exactly half of what I previously had, even though there shows no history of transactions or such. :/
Any idea?
Yeah, got your problems.
If you did not update your wallet, all your staking rewards you got after that point would be dissapeared when you update your wallet later and stay on the right chain.
Those staking rewards gone away because you got them in the wrong chain.
Based on what you said, you are fortunately lost half of those rewards. I guess it is due to you got half of them before the time of mandatory wallet upgrade, half of them dissapeared because you got them after that point.