I didn't realise support was handled here. I contacted Andrew but have not heard back yet, hence 'it didn't work' here.
Both apply and cancel buttons are greyed out when adding a venue.
If I tap on the apply button both buttons disappear and the Venue record is displayed. It doesn't say if the entry has been accepted or not.
Sony Xperia SP, jellybean.
Sony Xperia Z1 Compact, lollipop