Whether it is the same company or not they both follow the same policy of blocking US and some other customers. So what I said about OKEX seems to also apply to BCEX. If you try to sign up they require a phone number (non US phone number). If you do manage to create an account then there is the chance they will do KYC before you can withdraw and block you if you're a US citizen.

There may be a way around this for US customers but I don't know the details to say how it works. So if any US customers have used this exchange feel free to post your experiences.

References

https://www.abitgreedy.com/bcex/