You need to enter a license key into the How Many? chrome extension in order to unlock the extension. This is how we authenticate you to make sure you have an active subscription. You get your license key and enter it by following the instructions below. You use this same license key for the mobile apps as well. 

Get your license key.

  1. Login to 
  2. Click download
  3. Copy license key
Enter it in the extension
  1. Right-Click the extension icon
  2. Click Options
  3. Paste your license key in the field and click save. Sometimes you need to position your cursor and click above the "Enter your secret..." for it to work.
  4. Scroll down in order to see the save button.

  5. You should see a success message when it is saved