Skipping of rewards is quite deliberate so that probably rules out any “incompetence”
Admin is quite competent in coming up with new ways to fleece his marks AND keep the appearance of the site still “working”.
Keep in mind that the last wave of withdrawals was more than a week ago and the amount that was “withdrawn” can be easily inflated with fake transactions.
The bottom line is - the ever-declining “rewards” and withdrawal issues clearly show that admin is trying to reduce the “expenses” to match the fraction of “income” that remains after he takes his cut. And it will keep getting lower until (hopefully) there are no more believers.