in my viewport, the plane is visible but when I render it, it is not.
The plane is enabled for rendering?
Are you sure you have enabled it for render in the outliner?
Also, what render are you using?
Is that the correct plane?
As a VFX Guru you should have it properly named to avoid confusion.
yes it is the correct plane, thanks for reminding me to rename it, and it is enabled for render in outliner?
Im using cycles gpu
It should renders tho, just make sure you haven’t hidden it from your render, not only from the viewport.
As an other way out you can try to render that scene in different Blender’s version. Seems to me that you just hid something somewhere.
here is the .blend file
[https://www.dropbox.com/s/vthwozdwe8dtbwv/Road-to-Infinity-Template%20copy.blend?dl=0]
Seems to me like my PC is too way slow to handle with your scene 
ah, that’s a bummer
I just saw that you turn on the Transparent. Maybe that’s the thing?
Also, make sure you have not applied some transparency options to your plane.
Maybe it’ll help you:
https://blender.stackexchange.com/questions/221419/blender-cycles-shows-object-in-viewport-render-but-not-in-final-render
Yes, the camera icon means that it shows for render
I’d recommend you to check your plane shaders settings, just try to disconnect all the secondary nodes and do the render. Maybe it will help you
Show Emitter is unchecked for “render” in the Particle Settings
I completely missed it, thank you