Do you remember the message that was sent to you from italki? You can find it in your inbox here from “administrator”.
It contains Oxford website address and your information: your user name, password and organization ID.
Log into the Oxford website through the address in that message and then fill in your information, and then choose the “results” tab. In that page you can see your results in details and they give you the choice to download them, so download them on your computer and then print them.
I hope this helps. I wish you good luck :)
I see! Now I get your point.
I think if I was in your place, I would try to give my boss a link to my italki profile where
the OOPT badge shows which proves that I took the OOPT officially through italki and
my result in it. I know it's not an official certificate, but I guess it's more formal than an
excel sheet that you could create yourself. By clicking on your OOPT badge, your boss
would know when you took the test and how much you scored in the two parts (use of
English and listening).
By your italki profile link, I mean this:
https://www.italki.com/user/3871003