Nemo extension is broken

[JoeJoeTV]

I firstly didn't even know this had nemo support when I installed it.
After looking it up I found that it wasn't showing up because there were indentation errors in the python file and I tried it after fixing those errors.
But it still doesn't work sometimes, for example, it works with my phone connected but when I then also turn on my laptop, the context menu option is gone.
I also prints an error that an object has not been initialized: RuntimeError: object at 0x7f233f3221b0 of type KDEConnectSendExtension is not initialized, which I fixed by looking at other extensions and adding GObject.Object.__init__(self) to the __init__ function.

EDIT: When my Laptop is connected and I right click a file in nemo, I get this error:

Traceback (most recent call last):
  File "/usr/share/nemo-python/extensions/kdeconnect-send-nemo.py", line 102, in get_file_items
    item.connect('activate', self.send_to_multiple_devices, files)
AttributeError: 'KDEConnectSendExtension' object has no attribute 'send_to_multiple_devices'

Also, is this project still alive? I know the last commit was only last september but since the last release there are 107 commits and no new release.