please restart your wallets.
The Block explorer is on the correct chain.
https://chainz.cryptoid.info/kore/If you are not on or very near that block you can Reindex your wallets and/or try killing them
so it opens at the last place you opened your wallet so you dont have to sync the entire chain.
In Linux run:
kore-qt -reindex --daemon
Windows,
Right click the icon.
After .exe
Enter:
-reindex
But put a space after the exe so it looks like this:
.exe -reindex
Personally I have found what works well sometimes is if you know you are on a fork or stuck kill the wallet.
dont shut it down normally.
This most times forces the chain to start loading at the place you last closed it at so you dont have to load the entire chain etc.
Then go to debug/peers and ban all peers that are not on the correct block as the chain loads.
A bit unorthodox,... but it can help at times.
After you kill it you could also save a copy of your Kore folder if reindex does not work.
Once the wallet is staking on the correct chain for a few hours run:
clearbanned
In the console.