How does one report bugs for ubuntu? I currently have a few bugs to report on the multi monitor support

Have tried reporting bug with launchpad but it always takes to a page that only explained the bug process without any option to report one unless a crash occurred.

My main problems are

1. When connecting a monitor (25 inch 2560 x 1440) on my laptop (15 inch 3200 x 1800) scaling on the 25 inch monitor is too big.
I currently have set the scaling factor for my laptop to 200% and the external monitor as the primary one but the scaling for the monitor does not seem to work

2. If a second screen is connected and I close the laptop lid then the external monitor is not used and the desktop is only displayed on the closed laptop monitor. To solve this issue i have to log out and then back in and close the lid before launching any program for the desktop to be displayed only on the external monitor

3. (Unrelated to multi monitor setup but another bug) When I am go into battery section of new gnome settings application two battery values are displayed my laptop's and my mouse (logitech M705). If I am on that screen however and I unplug my mouse usb dongle then instead of its battery value disappearing the settings application closes/crushes

4. When setting up VPN to auto connect with wifi (done through nm-connection-editor) the wifi never manages to connect. However if I unselect the auto connect option while it is attempting a reconnection then it manages to connect to both. Doing the connection manually also poses no issues