If you use MalwareBytes, it can nag you for payment. Unless you want the hands-off functionality (automatic scans and updates), you can disable it. You can quickly and easily run and update it anytime you like and not get nagged to purchase it.
Here’s how to stop getting the upgrade pop-ups:
Start MalwareBytes, then:
1. Click Settings from list of options on the left
2. Click the My Account tab
3. Click Deactivate Premium Trial button at the bottom of the page
4. Click Yes to confirm