clowndotfire

I use Microsoft ToDo, sharing would be an option (requires an MS account for both)

On 2nd look - I see lemmy.ml comms, could have been a 'hickup'

Not sure - could be because it's the 'official' one and not a community server.

I don't think an app exists.
You can try with your Browser (Firefox if others don't work) and Power Delete Suite - installation/ running is the image at the bottom.