Cryptomator login to Microsoft Account: Login fails with "An error occured"

Hi all,
I am trying to connect cryptomator with my Microsoft Account to access my OneDrive. When trying to add microsoft as a cloud service, the login attempt fails with the message “Error occured”. This happens either directly after having entered my email address, or after having selected “login options”, sometime directly after having clicked on the plus sign to add a OneDrive account. I’m on GOS without sandboxed play services. Any idea how to solve this, or is it a bug?