Premium MyBB themes are protected by copyright law. Removing the license check is a violation of the Digital Millennium Copyright Act (DMCA) in the U.S. and similar laws worldwide. Developers have the right to sue for damages.
You do not need to risk a nulled script. Here are legitimate, safe alternatives for MyBB theming: Mybb Premium Themes Nulled Script
Nulled themes are notorious for hidden spam links. The cracker will add invisible <div> tags or JavaScript redirects that point to gambling, pharmaceutical, or adult sites. Premium MyBB themes are protected by copyright law
You won’t see these links because they are styled with display:none; or absolute positioning off-screen. However, Google’s crawler will see them. The result? Your forum gets de-indexed or slapped with a "This site may be hacked" warning in search results. Recovering from a Google penalty can take months, if ever. Developers have the right to sue for damages
When your legitimate premium theme breaks after a MyBB core update (e.g., from 1.8.24 to 1.8.35), you open a ticket with the developer. They fix it. With a nulled theme, you are alone. You cannot ask the original author for help (they will know you stole it). You end up on Reddit or StackExchange, posting garbled error logs, hoping a stranger helps you debug cracked software.