@Chelmite
You hold the shift key to select more components.

Now, You can use this extension. It works on Windows and Mac.

https://sketchucation.com/plugin/2371-s4u_import_camera
https://extensions.sketchup.com/extension/e1963b0a-246e-4312-bf00-206fc961d322/s4u-import-camera

Try this extension
https://sketchucation.com/pluginstore?pln=s4u_OnOff_Shadow
https://extensions.sketchup.com/extension/67b384a4-081d-4165-bc61-54f18891cbd3/s4u-on-off-shadow

Please update the new version 2.4.0 to fix it.

Thank you your feedback.
Please update the new version 2.4.0 to fix it.
Or
Inside Sketchup, menu Extensions – Suforyou – License Manager – Manager…
Select s4u-Layer
Click Install.

You can get free trial here
https://www.sketchupforyou.com/purchase/
connect more than 2 line segments you can trial here
https://sketchucation.com/pluginstore?pln=s4u_find_gap

I fixed it.
Please check again.

Draw Boundary from coordinate file.

Download
https://sketchucation.com/pluginstore?pln=s4u_draw_boundary

SketchUp Extension Warehouse

Your library of custom third-party extensions created to optimize your SketchUp workflow.

(extensions.sketchup.com)

Try save as Autocad DXF 2010 or later.
Update s4u ImportDxf v4.2.0 fix it.

Please contact to support@sketchupforyou.com.

I updated it.

Please following these steps:

• Install the latest version.
• Restart Sketchup.
• Try export again.
  If It still don't works go to menu Window - Model info
  Unselect "Enable scene transition".

You need to weld selected edges before making the frame.

Trial and Purchase : https://www.sketchupforyou.com/purchase/s4u_makeface/

Sorry! I fixed it.

Please check again.

Thanks,I will check it.

You Turn off Hidden Geometry in the menu View - Hidden Geometry.

s4u Weld
Overview
Weld Edges to Curves.Weld Edges to Curve Group.
Download:
https://sketchucation.com/pluginstore?pln=s4u_Weld
Video:

s4u Mirror
Mirror Objects by 1 click.
Mirror Mode:
-Mirror Objects
-Mirror and Duplicate Objects
Set plane by 3 methods:
-Select 2 points and Zaxis (select the boundingbox object)
-Select 3 points
-Select edge,axis,guide line or Face
Shortcut:
Right Click : Select point by a Middle from 2 Points
Ctrl (Alt on Mac) > Mirror and Duplicate
Download:
https://sketchucation.com/pluginstore?pln=s4u_mirror
Video: