Ok.I can solved this ploblem. I delete all node in GalaxyCash.conf except addnode=193.124.0.135 .
But i lost 3000+ gch .

You can lose coins only in one case, if you delete wallet.dat.
Coins themselves do not disappear from network. This is not a Hogwarts network.
before I delete every file (except wallet.dat) i have 4800 gch
now i have 1800 gch.
My wallet GQ2pLH1kZgW6aGHiniuZS4NzCm7wEYWT4X
I think because my pc add another node?
That sucks, i've definitely lost a few thousand coins over the various versions of this coin. It was very important to make sure you were on the right chain early on. If you mined on a forked chain, there's nothing anyone can do to recover your coins. It looks like the network is working better now, even when the hashpower ramps up with quick blocks, but it's still good to check (a few times a day) that you have the same height as the block explorer.