This has happened today for no reason. I have been actively using the app for at least 4 weeks. Unsure why and concerned this is some sort of scam.
We are really sorry to hear that.
For more details, we will need to take a look into your Plum account.
Could you contact us via ‘chat to human’ in the app, or by emailing firstname.lastname@example.org please? Our support team will be happy to assist you.