I downgraded to 9.8.2.5 but the problem with wrong time is continues.
As I can see, the problem is not with the new version, so there will be an external problem in the background.
Unfortunately, the real information content of your messages is very low, so I will not be able to help you effectively. You still didn't post what kind of device you have. Some boxes also have a 3V lithium battery, which if discharged can confuse the RTC.
Also I notice that some addons not working anymore, and some new updates fail to installed.
First of all, if you are trying to install/update from an external repo, you need to find the distributor with this error. I can only help if you only get an error when installing/updating from the LE repo, but there have been no updates recently.
Make sure you are trying to install packages for the Leia version (v18) of Kodi.