Question: if there's no website, how TF are you supposed to use Monzo or Revolut from a proper computer? Is there really no way to do something simple like xfer money or view balance without using your phone? If so, why did you even open an account, I'm assuming that since you are on this site you are at least a little bit technically inclined.
Just looked, and apparently Revolut is 1) app only 2) tied to a mobile number. So not only is it annoying to use, but likely also susceptible to sim jacking. Again, why would anyone want to use this; I hate having to deal with wells fargo (they bought a loan I have) but even they seem less crappy. Not trying to hate on OP, I'm just shocked at how crap their service appears to be.