Actually, that is the older type. Normally, when people get that ‘failed to send GetInfo’ error, we recommend to get a newer dongle type.
But what is strange in your case, that Dorico 2 runs without a glitch from the old dongle type and with just a Dorico 3 license.
So I wonder why it does not do for Dorico 3.
One other thing worth a try, open the eLicenser Control Center and let the Maintenance task run. Maybe that fixes something, but just a guess…