I’ve been through this process a few times now.
On occasion, when I need to login to scan or adjust any settings for any of my TasmoAdmin devices, the default password (which when I installed the add-on was simply my HA user name and password) is no longer accepted.
This leads me to having to uninstall and re-install the add-on from scratch every time.
Is there a problem with the add-on not remembering that my HA login is my login?