Hello Again,
Sorry for the issues on this. I can help troubleshoot this with you.
I looked at the coding and we place a limit of 200 in there.
Although it would be lost on updates a quick fix to get it working would be to edit this file:
the-events-calendar-filterbar\src\Tribe\Filters\Venue.php
And change this:
'posts_per_page' => 200, // arbitrary limit
to this:
'posts_per_page' => -1, // arbitrary limit
That will get all the Venues for now as it appears there is no other way to change it.
I have ticketed this for us to add a filter there.
Thanks