For version 7.10 specifically, you may need to buy a current license, then request a legacy key for v7.10 from customer support. Many vendors allow this.
Many so-called “hot” keys are already blacklisted, don’t work, or trigger a “license invalid” message after a few weeks. typing master pro 710 license id and product key hot
: You can no longer purchase licenses for Version 7 directly from the official TypingMaster website . The developer now offers TypingMaster 12 TypingMagic 12 as their primary commercial products. Free Alternatives For version 7