I've just develop the website and try out the K2. Add New Item pop-up, however I can not type, save or even close it. The input table keep repeating. Would anyone help me to solve the problem? See my picture

i.imgur.com/scySNmN.jpg
imgur.com/LKNhBXQ
imgur.com/3PWUSMN

Thank you for all your help.

Dzung

Hello,

This is most likely caused by a 3rd party extension conflict.
Try deactivating 3rd party extensions one by one to see which is causing the issue.

My website is under develop and I have numbers of the extensions install in the web site. This is my first time to create a web site by myself. If you are able to get in the backend and check for me then I'm very appreciated.

Please let me know if you can help then and i send you the login info in the private message.

Best Regards,

Dzung

What you need to is the following:
Deactivate 3rd party extensions one by one to see which one is causing the issue.