So this is where I am stuck with an off-site test machine. No matter what, the remote machine will not authenticate the invitation code.
do you put the invitation code on agent or website? could you please point me the step you are stuck?
Help guide might be useful. https://help.comodo.com/topic-289-1-717-8494-Step-4---Login-to-Technician-Console.html#add_manage_device
The one thing I noticed, is that the invitation code is a one use code (at least from my experience). This is a really flawed design when onboarding a new client. You need to generate a new code for every computer. Even with small clients, this gets tedious fast.
We improved this on new version. you would be able to generate site deployment agent to be enroll as much computer as you need. It will be release soon.