Long story short , i realized ,soon enough , my miners didnt mine anymore just by checking f2pool.
I try login to my miners , nothing . I realize i got hacked.
I try reset them by pushing the button they got for 10 / 15/ 30 secs nothing. By searching the internet i found there is a guest account with pass guest.
As guest you cant change anything just observe.
I try it , it logs . I see account 4sm4 mining on viabtc ....

So what can i do ? My thoughts so far , either i am not doing a correct factory reset or the factory settings are modified as well .

Thanks in advance guys