You need to perform a full reset of your Heredis preferences in order to solve the problem.
Here are the steps to follow to perform a full reset of the Heredis preferences:
This is risk-free for your own files.
If Heredis is already running, close the program. Once it's closed, relaunch Heredis while down the Shift (⇧) +ALT (or Option or ⌥) keys simultaneously. You must hold it down until the Heredis software and the reset notification at the top right of your screen are launched. Log in to activate the license:
(Your version of the software may be different, but its behavior will be the same.)