Hi
I’m having the same issue on all of my devices. I have two iPhones and two iPads logged in. Every once in a while I’m logged out of one of them for no apparent reason but when I log in with my correct credentials it says my username or password is incorrect. I can use it to login to my other devices and the only way I can get it to work on the device I’m trying to login to is to reset my password to the same one on the web site. There must be a problem in the coding on the web site, you think?
John