The high probability that the fund cannot be redeemed is that the fund has suspended trading. After the fund suspends trading, investors generally can't purchase and redeem, but can only purchase and redeem until the fund resumes normal trading. There are very few periods when general funds suspend trading.
There are many reasons for the fund to suspend trading, such as: 1, controlling the fund size; 2. Extreme markets protect the interests of holders; 3. Other reasons, no matter what causes the suspension of the fund, the fund will issue an announcement, and investors can check the announcement.