Using the webapp, I created my first two Riot/Matrix users:
I cannot find or write from one to the other.
What do I miss?
Browse to https://riot.im/app
Google Chrome is up to date
Version 72.0.3626.119 (Official Build) (64-bit)
I do find other usernames starting with test2018, but none starting with test2019
Either the creation of the users partially failed or the lookup partially fails.
The autocomplete only shows users you share rooms with for privacy reasons (or users in public rooms) . You can send invites to any full MXID, e.g @test......:matrix.org
Also the user directory on matrix.org is currently wedged, so even if you are in public room/share rooms the user search functionality is not going to work for newly created users (this is being addressed).
This is this: https://github.com/matrix-org/synapse/issues/4581
Thank you - I can send invite using the full ID @test20190225a:matrix.org
Most helpful comment
The autocomplete only shows users you share rooms with for privacy reasons (or users in public rooms) . You can send invites to any full MXID, e.g @test......:matrix.org