
应该是下载完了没更新进度,手动解压添加吧 
重新启动下dashboard,看看是否正常,如果还是不可用,可链接下载包试试
windows下载链接:https://download.cocos.com/CocosCreator/v3.8.2/CocosCreator-v3.8.2-win-011206.zip
mac下载链接:https://download.cocos.com/CocosCreator/v3.8.2/CocosCreator-v3.8.2-mac-011206.zip

应该是下载完了没更新进度,手动解压添加吧 
重新启动下dashboard,看看是否正常,如果还是不可用,可链接下载包试试
windows下载链接:https://download.cocos.com/CocosCreator/v3.8.2/CocosCreator-v3.8.2-win-011206.zip
mac下载链接:https://download.cocos.com/CocosCreator/v3.8.2/CocosCreator-v3.8.2-mac-011206.zip