I'm not sure when this issue started, but I just noticed I cannot install or update addons from any repository. Installing from .zip files work fine (tested with Youtube alpha addon). I tried researching the issue and everything always seemed to point to time issues. However, my time is correct on the system so I assume I'm using the default NTP servers (I haven't set anything manually). I haven't made any changes this year and was previously able to install/update addons (although it could have been months since the Youtube addon officially updated). I did try manually try setting NTP settings to 0.north-america.pool.ntp.org and 0.pool.ntp.org (not exactly sure what I'm doing with those), but I undid this as it didn't fix anything after restarting. My time remained correct with and without these in the Libreelec settings.
Line 466 of the attached log gives the error "Failed: SSL peer certificate or SSH remote key was not OK(60)." I don't know if this is NTP-related or if something broke with SSL certs with Libreelec 9.0.2 recently (which I can't upgrade from).
I have "Wait for Network" enabled. I do not have any NTP servers manually entered. I have internet access on the device. I have multiple devices (attached log is from Odroid C2. I also have 2 Pi3s) and the date & time is always correct on each of them. The devices have unrestricted Internet access (tested with Youtube addon).
Due to the Odroid C2 being the main device I use, I am on Libreelec 9.0.2 across all devices. This device is hardwired. My router is not configured to block traffic.
If I am supposed to configure NTP servers, I'm not sure exactly what to type in - all my research seemed to lead to general instructions but not a specific address (unless I just didn't understand).