The Hong Kong-based exchange said it is temporarily halting trading while investigating issues on the platform.
The world's oldest crypto company is currently investigating the issue.
Binance, Coinbase, Gemini and Kraken are all having technical difficulties under heavy trading load.
Spillover from market drama on Wall Street is crippling U.S. crypto exchanges.
The financial regulator ordered the Bitkub exchange to close and fix issues that caused several outages as prices spiked this month.
The exchange also said it's working to improve its customer service response time, another source of complaints.
With popular online trading platforms hit by more outages amid high volumes, companies like Robinhood may learn something from crypto exchanges.
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Coinbase experienced a temporary outage as daily volume spiked to over $320 million amid bitcoin’s rally to $8,900.