No sure for the rest of the Vaders subscribers out there but dayum if I don't need to re-enter my login info about once a week or so since they get deleted. It happens with the Kodi app, the Vaders app and even Perfect Player will not be able to login.
Every time it happens I have to send a tix to my reseller who (after a couple of hours) says, there is nothing wrong from our end, try again and by golly it will work after entering my login.
It's so frustrating. I have cleared cache's etc and nothing works until I hear back that "nothing is wrong" and then it works again.
I've had zero login issues and very few issues in general recently. There might be something with your network or ISP.