How long your Malwarebytes Anti-Malware license will remain valid depends on what type of license you have.
- Malwarebytes Anti-Malware PRO licenses (purchased prior to 3/24/2014) are valid for an entire lifetime and require no renewal
- Malwarebytes Anti-Malware Premium licenses (purchased after 3/24/2014) are valid for one year after the purchase date
To determine how many computers you may use your license on, please read this KB article: How many computers may I install Malwarebytes Anti-Malware on?
If you are unsure what type of license you have, or if you have additional questions or need assistance with this particular scenario, please contact support.