The version "v9.9.8" likely refers to a heavily modified or fake version number used by distributors of pirated software to appear specialized or "full featured." Using nulled software for a critical server management tool like cPanel/WHM carries extreme risks.
Using a nulled license is a "ticking time bomb" that compromises your server's security and your business's legal standing. Cpanel whm v9.9.8 full nulled