您好，我遇到一个mtk license获取的错误，请问如何解决呢？

我的旧license过期了，提示如下：

Using license file:  /home/omm/soft/mtk_2.9.4_linux_amd64/license.json
Name  : caoyixuan@ebupt.com
Expiry: 2023-11-29 16:13:56.361847768 +0800 CST
License expired 
Please use /home/omm/soft/mtk_2.9.4_linux_amd64/mtk license gen command to request

之后我用./mtk license gen命令尝试重新获取license，遇到如下错误：

Using license file: /home/omm/mtk_2.9.4_linux_amd64/license.json
Name : caoyixuan@ebupt.com
Expiry: 2023-11-29 16:13:56.361847768 +0800 CST
The License code is invalid, start applying
✔ Email: caoyixuan@ebupt.com█
Start applying for email caoyixuan@ebupt.com authorization.
Failure : Post "http://ymzspitwutgk0.license.enmotech.com/api/v3/license31": dial tcp 119.3.183.66:80: connect: connection refused
The application for authorization failed. Please apply for or replace the server manually.