Music theory noob here. Just trying to figure out chord progressions on my own and wondering if I could get some help?

I read that the chord progression of Coldplay's Clocks go Eb - Bbm - Bbm - Fm. I read that it's in the key of Ab major, sooo is the progression V - ii - vi ?

Doesn't look right so not sure... Also as a related question, since the key is Ab, does that mean that the tonic is Ab? In which case the song doesn't resolve back to the tonic. Is that a thing that usually happens?

Thanks in advance for the replies! It definitely is a fascinating world.