Hello.
I have a Mac book Pro, OS ver.13, and last week I got my Licence.
but I couldn’t do my Licence Activities.
Welcome to the forum, @About_Sue. What product did you buy? All of the current versions of Dorico (Dorico SE, Dorico Elements, Dorico Pro) use the new Steinberg Licensing system, and you shouldn’t need to use eLicenser Control Center any longer.
I have a Dorico Pro 3.5 Educational Licence.
If you have only just purchased your Dorico 3.5 license (or indeed any time after mid-August 2021), you should be eligible for a free grace period update to Dorico 4. Can you run Steinberg Activation Manager on your computer, then in the account menu (top right corner) choose Grace Period Check and see what it tells you?