FCP 7 won't accept my serial number
I haven't used FCP 7 for a while - I then used it on Saturday, but only after re-entering my serial number, name, company etc. Today, its doing the same thing - I know I have a figure or digit wrong somewhere, and thought I'd corrected it, but it refuses to accept the input. How do I go about getting the CORRECT serial from APPLE please>?
Mac Pro, OS X El Capitan (10.11.6), FINAL CUT PRO 7