Rush mode is not available.

I've had this problem since last month. The model I use is a switch. When I try to play Rush Mode, my teammates gather, but just before the game starts (I shut down the software because of an error), the screen goes black and the game forcibly shuts down. I waited a while, restarted the game and tried changing my internet connection, but nothing worked. Also, you can play other online, and there is no problem to play features such as rival and SBC. It is the same no matter how many times I try since last month. Also, I tried all the troubleshooting recommended for this error, and the software update is up to date, but I can't solve the error. Isn't this a problem on the server side and some people have an error? If so, please fix this error in an update. I haven't been able to play Rush since last month.

Please let me know if you have any information that can be solved