By using https://myssl.com/ After detection, it is found that the cause of distrust is incomplete certificate chain,
It happened that the page had the download address for the certificate chain, so it was added.
I thought the incident would be solved by now,
However, the mobile terminal is still not trusted after the online detection of myssl passes,
It's hard to understand~
Finally, thinking that it must be the certificate chain, I tried to go to the official website to get a copy,
Then, perfect solution.