The app can be quite useless in Singapore. If I book a taxi, I get the chance to enter address (well postcode to be specific - each building has unique postcode) and a text field instructing pick up point. Uber is quite pathetic in that regard, at my condo, it doesn't show the entry point so you have to pick the point on the map, and no chance to give the condo name and write "guardhouse" (like I do with a taxi). 7 times out of 10 is OK, other times they've gone to nearby hotel or shopping centre over the road. It's at the point now where if it is time critical I will not use uber.
Provide feedback and it's always blame the driver for not knowing how to use their ever-so-perfect app.
I don't know for sure, but if in Docklands, I expect
Cruiser encountered similar problems.