Brainless Technologies Ltd.

No. There is a link on the contact us page.

Nothing for UGCCMon in event viewer? It is what's responsible for the auto restarts.

I don't see any errors or reasons why the monitor wouldn't restart in the logs. Your settings look good. Not sure what might be causing it not want to restart. Maybe review the log tool without any filtering around the time you've set the server to restart. Also check event viewer logs, maybe ...

Check the logs?

We're not adding new features to the panel at this time, but it's a cool ideal. Once source is published maybe the community will implement such a thing.

Is the monitor service running?

you must specify your admin username and password as the error states. The u= and p=

Most hosts offer a smtp server you can use. All OS's are capable of running a smtp server and provide software to do so.

You have to urlencode email addresses in URL parameters.

Use your ISP/hosts mail server.

Panel generates a random password. I'd do c=newuser, o1=username, o2=email. Then do a newuseremail and panel will email user with new password.

API is only supported method of adding users

Why not use the newuser API? viewtopic.php?f=21&t=244

There's no option for user registration, it's all manual. You can use the API to create your own registration system though if you'd like.

Use mysql and not mariadb.

You should be able to. Just create a new server, enter the details for your existing server and you should be good.