| Issue | Description | |-------|-------------| | | Due to rising network difficulty and BTC price fluctuations, daily earnings dropped sharply over time. | | High maintenance fees | Fees often exceeded daily earnings, leading to negative ROI. | | Withdrawal delays | Many users reported weeks-long delays for payouts, especially after 2018. | | Minimum withdrawal thresholds | High thresholds (e.g., 0.05 BTC) made small users unable to cash out. | | Lack of transparency | No public proof of actual mining hardware or operations. |
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