Hello, I am using mycelium for a few years now, although I had to make an electrum wallet for a specific reason. The thing is I really don't like the electrum app, its at least inconvenient. So I thought it would be great if I could import the wallet to mycelium so I can keep an eye on the electrum wallet without  having to use their terrible app. I tried importing the master key, although a notification appeared saying "Can only import account level 3 (xpub) addresses, this was level 0". What does this mean, and can I watch my electrum wallet through mycelium?
Thank you in advance.