Porthos,
SUCCESS!
Actually, after I looked at the settings in my Legacy Malwarebytes Premium again, I discovered that it was the LIFETIME license, which I actually purchased years ago. At the time, it was a one time purchase for up to 3 PCs and it never expires. So, I added the License ID and Key to my account, then deactivated ALL (the only option). After that, I logged into Malwarebytes website and downloaded the FREE TRIAL version. After downloading, it asked me for the License ID and Key, which it accepted, so now I am good to go with my Surface GO.
FYI: I have a HP Spectre 360 laptop, that I love, but the battery is swelling badly (2 1/2 years old). The ASUS EEEPC was my temporary Netbook and emergency backup PC. After spilling coffee on the keyboard and replacing it, then having the hard drive die and replacing it with a SSD, installing Windows 10 and over-clocking the processor (Intel Atom) as much as it would tolerate, it was better, but still way too slow. So, I decided to get a Surface GO on sale at Best Buy with keyboard cover, 8GB RAM and 128GB SSD.This way, I will have a faster backup PC while I have the battery replaced in my HP. However, I really like using Malwarebytes, along with the the weaker MS Security and have not experienced any malicious virus issues. So, I wanted to move the Malwarebytes from the ASUS EEEPC to the Surface GO ASAP. Note that all work on the ASUS EEEPC was done by me - I am a Certified Electronics Technician and a FCC Licensed Amateur Radio ("HAM") operator, as well as a Certification Administrator for ISCET and FCC. So, I am technically literate...
Thanks again for your time and assistance. Your responses encouraged me to attempt the move and it worked!
Jim