The Cayman Islands' financial watchdog said that Binance has not registered to operate in the nation and that it was investigating the matter.
The Monetary Authority of Singapore is reviewing Binance's application for a license to operate in the city-state.
The biggest crypto exchanges have grown by working around national regulators. Regulators are starting to take notice.
"Binance can no longer continue to service Ontario-based users," the exchange said Friday.
On Friday, Japan’s financial regulator warned that Binance is operating in that country without permission.
The Financial Services Agency said Binance isn't registered to do business in the country.
Binance may gain customers because of Huobi's new restrictions.
Customers of Johannesburg-based bank Absa received an error message when attempting to buy crypto on Binance.
Trading will start 10 a.m. local Singapore time on Thursday.
“Every gaming company that I speak with now is researching NFTs,” said Big Time CEO Ari Meilich.
“We are working hard to provide an alternative USD solution,” the exchange told traders in a widely shared email whose authenticity CoinDesk confirmed.
Binance declined to comment on Wei's whereabouts.
The move comes as officials in mainland China have upped the pressure on crypto mining and trading.
Binance said it froze the Hamas-linked wallet.
Binance led competitors in May with a monthly trading volume of $2.46 trillion, up 49% from April levels.