Well, now I find that this discussion is for nothing. I am using basic and have Evernote on my Android. I had been using it on my computer, but after going through the frustration of not being able to access this discussion on my computer, trying everything I could imagine, I finally found the answer in another forum where several frustrated users who had come up against the same problem were discussing that Evernote now counts an account on a PC as a device and if you happen to need to access something, like I did, where you have to use the web you are blocked because that is now another device.
What seems strange to me is that on Android, I have the account and also am able to access this on the web. I is not another "devise."
Thank you all for your help. Maybe it will help someone.