"Invalid Token" when no internet connection is available

[subtractdown]

versions

• sample sdk application version 3.2.2 with token authentication (add '.accessToken("tokenhere")' between 'SumUpLogin.builder(...)' and '.build()'
• banana pi m2 zero with android 4.4.2

steps to reproduce

• connect android device to wifi access point without internet access
• start sample sdk application
• click "login"

observed behaviour

• the login fails with "Result code: 5" and "Message: Invalid Token"

expected behaviour

• the login fails with information that the sumup server could not be reached