If HELO is broken in some way and you want to install it from scratch, make sure to delete the config files that hold your settings and all emails.
HELO stores data at:
Linux: /home/<Username>/.config/HELO Windows: C:\Users\<Username>\AppData\Roaming\HELO Mac: /Users/<Username>/Library/Application Support/HELO
The settings are stores in the
vuex.json file. Renaming this file to something else creates a
fresh version on the next app start.