Cannot install the Avas Theme

Envato Customers Web and Code
1

I recently purchased Avas themes from Envato market place, l have not been able to install it to my webserver to use on my site.
It shows the error message, Link has expired… Please treat urgently. so that l can deploy the themes to my sites

2

Hello,

Contact with your item author

Here is Avas theme support

contact with that author with purchase key here

Thanks