Hello

when adding tags to articles the date and time become like this, and when remove the tag everything back normal

imgur.com/a/4IUpe

this is my website

insideracing.com

advice please

Hello there,

Can you try backing up and installing the DEV version?
You can get it from github.com/getk2/k2

Thank you Krikor for reply

I could not find the right plugin to download, there is a lot of files in the link you gave me?

which one should i download?

also today when i save the item i get this

DateTime::__construct(): Failed to parse time string (-1-11-30 00:00:00) at position 5 (-): Double timezone specification

Try the Green Button that says Clone or Download. Click it and select download. Install the downloaded file just as you would the k2.zip you get from getk2.org

Thanks a lot sir

should i uninstall the old one? or just upload the new one and its will override the old?

NEVER uninstall K2. You will lose all of your data and there is no going back unless you have a backup.

Install through Joomla!'s extension's manager like any other extension.