Your number seems too long for a GEDmatch number. I could be wrong. It also could it be some other kind of number? If you registered with an email, there should be help to find your actual GEDmatch number.
Your number will start with a letter that signifies where you had your test done. Some of the numbers I've seen are one letter and 6 numbers long. I searched to find variation in these, but was unable to see how big the numbers can be.
Hope you find your data. You can always do the process again, and you would be assigned another number.