Vn, there is no specific way to find out if an account is a cent account or not.
Even if a broker offers a cent account, it reveals nothing regarding a specific account.
If you have any suggestion on how this can be achieved programmatically, you're more than welcome to post it here.
On the same note, I would like to point out that it is not an issue with Myfxbook but with the broker offering such accounts with no way of identifying it. Myfxbook is a 3rd party validation tool and as such, it shows exactly the same data as in the trading account of the user.