The provided string is a base64-encoded VMess protocol configuration.

Here's how you can decode and interpret it:

1. **Decoding the String**: First, we need to decode the given base64 string using a base64 decoder tool or library in your programming language of choice. The decoded output should give us a JSON-formatted string which represents the VMess configuration.

2. **VMess Configuration Interpretation**:

* `remote` and `ws` are not present, but we have `ps`: This suggests that instead of connecting to an HTTP or WebSocket server (`ws`), this VMess connection is using a PS (Pseudo-Socket) protocol to connect directly over TCP.

* `alterId`: This field isn't provided in the decoded JSON. In a full VMess configuration, you'd expect to see an `alterId` with a specific value.

* `uuid`, `pskHash`, and other fields are present as expected.

3. **Possible Issues**:

* As mentioned earlier, the absence of certain fields (like `ws` or `remote`) could potentially indicate an incomplete configuration or a custom setup that might not be fully compatible with standard VMess protocol implementations.

* The missing `alterId` in your decoded string suggests that you're likely using a simpler form of VMess connection. However, for most scenarios, including an `alterId` is crucial for additional security and compatibility.

4. **Usage**:

* To use this configuration with any compatible VMess client or server, ensure that the missing fields are correctly filled in according to your specific setup.

* Note that you might need to adjust the values of `uuid`, `pskHash`, etc., based on your actual PSK and UUID.