The inability to buy and sell a fund generally means that the fund has suspended trading. During the suspension of fund trading, the fund continues to operate, but investors cannot conduct transactions, which will not affect investors' expected returns.

Reasons for fund purchase suspension: 1. Due to too many investor subscriptions, the fund size has grown rapidly; 2. Fund subscriptions will be suspended during the fund dividend period; 3. Some uncirculated stocks are held. During the period when the stock is about to resume trading, in order to protect the interests of holders, the fund has decided to suspend subscriptions.