1. Fund Expiration: If the held fund has expired, it will be deleted from the account. Failure to renew the contract in time will lead to the disappearance of the fund.

2. Fund company adjustment: If the fund company no longer sells some funds, these funds will be removed from the account.

3. Transaction error: If you encounter a transaction error, such as entering the wrong fund code or purchase amount, the fund will disappear.

4. Network error, the purchased fund is not displayed on WeChat, which is caused by network delay. This situation only needs to be constantly refreshed until the fund you bought appears.