11:09am - Vodafone are reporting this issue as resolved and Droppah appears to be accessible on the Vodafone network as normal.
Vodafone are currently experiencing issues for some users with accessing most Microsoft services and applications on their network.
Droppah services are hosted by Microsoft Azure, so Droppah is currently unavailable for some users on Vodafone networks as a result.
We're monitoring the situation and will update as soon as possible.
Vodafone have a monitoring site here for updates - Vodafone Customer Impacting Events