Cant see my worker in pool dashboard

I have 8 worker, all of them work normally, but I can only see 4 of them in the mine pool, they all seen in the mine pool before why?

What pool? Can you provide screenshots/links?

hive pool,I can see my miner in the mining pool after I upgrade to the latest HIVEOS version,but it automatically creat a new flight sheet for my miners to connect to unknown pools。
ISPJE1ARC8FMABEA`P)G$O9

Every time I change the flight sheet back, it will automatically change to this unknown pool

Looks like your rig is compromised/hacked. Time to do a fresh install, change passwords, revoke any 3rd party access and change system password/ssh password and make sure to use 2fa with google Authenticator as well.