keys not working

New x86 based router, installed ROS6.44 from ISO, and purchased new L6 license key.
Paste/Import key several times, and every time it reports no valid license.

Any suggestions as support seems to be having problems replying to me.

The router I am installing has no video so ROS was installed on an x86 device which has video but ethernets are not recognized.
I was pasting the key after moving the drive to the headless router.

I installed the drive back into the original x86 device, manually entered the key, and it worked.

Moved the drive back to the headless device and everything is now fine.