皇冠会员反映投注不了

皇冠会员反映投注不了，显示 "系统最佳化中请稍候"，请问这是什么问题呢？

由于系统正在升级所以目前无法进行投注，请稍后再查看。  

Crown members reported that they could not place bets, and it displayed "System optimization, please wait". What is the problem?

Because the system is being upgraded, bets cannot be placed at the moment. Please check again later.