As a dirty fix change version 1.7 to 1.6 in the plugin.conf (only in a text file), and it does not downgrade the plugin.
or update the following variable to empty
As version 1.7 is from year 2017 and is marked as "in testing": https://forum.directadmin.com/showthread.php?t=22715 I would personally not use this plugin. I would not expect it to be stable.
If you still have problems after removing the plugin, I would suggest opening a ticket at tickets.directadmin.com - at the same time you could ask them if this plugin is still supported, and if they are going to make a stable version?
I too have interest in the functions this plugin would provide. It does not work currently (on DA 1.575, using Evolution theme). I'll investigate the code a little, but I'm fairly new to DA and have a ton of accounts to migrate still.
Note: When I installed the plugin I noticed it says "Simplificare Hosting and Solutions" in a greeting like title. Not sure if that's meant to be replaced? I would be happy to give all the credits but don't want my clients to think their hosting provider has changed.
I'm also using it and I'm happy with the updates. Even the 2.0 update you pushed today.
However, in my opinion the dashboard doesn't look too good (design wise). Also I want some users to have all abilities while others are only allowed to set a vacation/away message. So changing passwords is not permitted thus the contract with this specific client. There is no option for that in this dashboard.
All this made me realize, maybe it's better to make myself a simple dashboard. I do appreciate your effort though!! You're one of the few that pushes updates so much.