Hello 腾瑞
Sorry to hear you're having problems with opening WAG.
If you're having a greyed out 'Open in Unity' button, you can either try to update your Wwise Launcher or open the Unity Hub (or just 'Unity 2018.4.x') and open it from there. If it cannot find the project then find it manually and select the 'WwiseAdventureGameSource' folder.
Also, here's a related post to yours.
Let me know if this helps
TRANSLATED (by google):
抱歉得知您在打开WAG时遇到问题。
如果您有一个灰色的“在Unity中打开”按钮,则可以尝试更新Wwise Launcher或打开Unity Hub(或仅打开“ Unity 2018.4.x”)并从那里打开它。 如果找不到项目,请手动找到它,然后选择“ WwiseAdventureGameSource”文件夹。
因此,这是您的相关文章。
让我知道这是否有帮助