Can't install either Headshot or iRay Render plugins thru the hub. I get the attached. I've also tried the direct link DL that RL sent out but get a similar message.
CC4 is installed and functional.

Did you remove the Trial version?
also did you try to redeem the plugin upgrades?

Open a new browser in which you haven't logged in Reallusion ever.
Or use incognito

Login into the desired account

(Make sure that it is same account that was used to purchase the plugins)

Check order history

Try this link  on same new  browser in a other Tab
https://www.reallusion.com/event/freeproduct/default.aspx?cid=292&chk=7417146ea8b2c7a62b2b454c5d99134d&_gl=1*wejrlf*_ga*MTY2MjQzNzc1Ny4xNjQ5MTA0Mzky*_ga_Q3FS71VPKC*MTY1MjQyODY1MS4yOTkuMS4xNjUyNDI5NDUyLjYw

Thanx but done been down all those roads based on past experience with RL products with no joy.
I've tried the links sent with the 'Claim your plugins now' and get the attached.....makes no sense but not surprised based on past update rollouts.