Hi there –
Sorry for the issue. This is caused by Leadin Pro trying to install itself when the ww.wp.xz.cn repository of Leadin already exists. The solution is to first delete the existing Leadin plugin then try reinstalling Leadin Pro. Don’t worry – none of your data will be deleting and Leadin Pro should just seamlessly update itself.
Alternatively, you can update to Leadin Pro by extracting the contents of the ZIP file, and then manually uploaded the new “leadin” folder to your /wp-content/plugins directory, overwriting the existing “leadin” directory in there.
If you want some more information on how to upgrade, we put together this support document outlining both ways to upgrade.
Please let me know if you have anymore questions and I’ll happily help you out. Cheers!