Hi.

It appears you found your NWC tenant URL. If one of the posts on your previous thread helped you find it please mark it as the accepted solution as this encourages users to keep assisting others.

For this issue it appears you are using chrome on MacOS.
As per the Help documentation only chrome on windows is supported.
Try Safari on macOS as per the document.

https://help.nintex.com/en-US/nwc/Content/TechInfo/Web%20browser%20support.htm?Highlight=Browser

In future please report bugs to Nintex support as they can then be fixed as they may get overlooked here. 

Support@nintex.com

Thanks, this problem disappear.