Now all the pools are as follows:

http://tychecash.labbinarymining.com/ is still on the wrong chain and they are mining the block 8132.
http://tyc.revientaicos.com/ is still showing the network as the Blockchain Height: 5952
https://tyc.cryptomineros.com/ still stops at all and only a message "We are stopping this pool while waiting for a fix for the synchronization issue." is displayed.
https://tyc.dreampool.info/ probably closes in future and even actively rejects any connections.
Unfortunately, Blockchain would not be synced. we have lost some blocks.
" We are very sorry. Pool was temporarily closed and some other pools have the same problem.
we will try to find your coin mined.

Tychecoin from bitcointalk.org said "Reset your pools". so we will try with the new wallet.
But we can't promise to keep your coin mined.

Blockchain was back to before the accident. It seems all your unpaid coins are disappeared.
Pool will be closed soon. That's a sad news. I'm very depressed about it and very sorry "

Then is the coin fit for pool-mining?