"Cannot get icarus files" error when installing AVG Tuneup

I'm getting the above error.  Attempting to install an existing subscription of AVG Tuneup onto a PC - Win 10, 64 bit.

Hello David,

We're sorry to hear this.
To resolve this, we've sent you an email instruction to get our free additional support.
Please do check & revert back to us.
Thank you.

Hello David,

We're sorry to hear this.
To resolve this, we've sent you an email instruction to get our free additional support.
Please do check & revert back to us.
Thank you.