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2021-10-12 17:32:01.107 T:3908014960 ERROR: CCurlFile::FillBuffer - Failed: SSL peer certificate or SSH remote key was not OK(60)
It's not the NTP/time issue that invalidates the cert (which produces different error messages). It's also not clear what the issue is, but I'd hazard a guess that something fundamental with the TLS cert is bad, e.g. ciphers supported or perhaps broken chain of authority (signed by someone that the embedded certs in your 9.0.2 image cannot trust).
If you attempt to download https://mirrors.kodi.tv/addons/leia/sc…ktail-1.1.0.zip direct from the console you might get more info?
NB: There are some community releases for S905 devices that are newer than 9.0.2 which might be worth investigating on a spare SD card. Sadly the LE10 codebase is not ready for prime-time use (board support is good, media capabilities are not).