Potential switch from EDF

Hi there, I’m really interested in switching to Bulb but have a couple of questions.

I’m currently with EDF and they keep phoning to offer me a smart meter but I’ve been stalling as I know I want to switch. Can I get it installed and carry it over to Bulb without incurring any fees?

Also, I received the warm home discount last year. I recall on the letter (which I can’t currently find frustratingly) that it said something about having to repay the money if I switched supplier too soon. Does anyone know where I stand with that?

Many thanks in advance!