My account is not able to access UT

It's OK to connect to FC26 service, but not able to access UT for two days.

 When attempting to enter UT mode, a brief loading period is followed by the message: "Connecting to UT is not possible at the moment. You will now be returned to the main menu."  

The same issue occurs when switching servers to other regions of Asia via the accelerator app.  At previously time, access was normal. In UT, SQB and DR matches functioned properly, but the "Ultimate Challenge 6" match failed to complete. After the "Ultimate Challenge 6" match concluded, whether exiting game or complete the match, the system displayed: "The EA server cannot process your request. Please try again later."  Then exited UT and returned to the FC26 main menu.

Platform: steam PC

Location: All servers